diff --git a/package.json b/package.json
index f098676fcbd6d995948d7551277259f3d9b6e09e..459f80cf060042f186bdbadcc148f97611e4680e 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "eslint-plugin-jsdoc": "^31.0.0",
     "glob": "^7.1.6",
     "i18next-scanner": "^3.0.0",
-    "karma": "^5.1.0",
+    "karma": "^6.0.0",
     "karma-chrome-launcher": "^3.1.0",
     "karma-firefox-launcher": "^2.1.0",
     "karma-mocha": "^2.0.1",
diff --git a/yarn.lock b/yarn.lock
index 43c0ea8e985cda11280eb93c5d9df5835118f0d8..5e8e6ad4b87511053323c3a347ad430c556fbda4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1024,6 +1024,21 @@
     "@sentry/types" "5.27.4"
     tslib "^1.9.3"
 
+"@types/component-emitter@^1.2.10":
+  version "1.2.10"
+  resolved "https://registry.yarnpkg.com/@types/component-emitter/-/component-emitter-1.2.10.tgz#ef5b1589b9f16544642e473db5ea5639107ef3ea"
+  integrity sha512-bsjleuRKWmGqajMerkzox19aGbscQX5rmmvvXl3wlIp5gMG1HgkiwPxsN5p070fBDKTNSPgojVbuY1+HWMbFhg==
+
+"@types/cookie@^0.4.0":
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/@types/cookie/-/cookie-0.4.0.tgz#14f854c0f93d326e39da6e3b6f34f7d37513d108"
+  integrity sha512-y7mImlc/rNkvCRmg8gC3/lj87S7pTUIJ6QGjwHR9WQJcFs+ZMTOaoPrkdFA/YdbuqVEmEbb5RdhVxMkAcgOnpg==
+
+"@types/cors@^2.8.8":
+  version "2.8.9"
+  resolved "https://registry.yarnpkg.com/@types/cors/-/cors-2.8.9.tgz#4bd1fcac72eca8d5bec93e76c7fdcbdc1bc2cd4a"
+  integrity sha512-zurD1ibz21BRlAOIKP8yhrxlqKx6L9VCwkB5kMiP6nZAhoF5MvC7qS1qPA7nRcr1GJolfkQC7/EAL4hdYejLtg==
+
 "@types/ejs@^3.0.4":
   version "3.0.5"
   resolved "https://registry.yarnpkg.com/@types/ejs/-/ejs-3.0.5.tgz#95a3a1c3d9603eba80fe67ff56da1ba275ef2eda"
@@ -1069,6 +1084,11 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.8.tgz#2127bd81949a95c8b7d3240f3254352d72563aec"
   integrity sha512-z/5Yd59dCKI5kbxauAJgw6dLPzW+TNOItNE00PkpzNwUIEwdj/Lsqwq94H5DdYBX7C13aRA0CY32BK76+neEUA==
 
+"@types/node@^14.14.10":
+  version "14.14.20"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.20.tgz#f7974863edd21d1f8a494a73e8e2b3658615c340"
+  integrity sha512-Y93R97Ouif9JEOWPIUyU+eyIdyRqQR0I8Ez1dzku4hDx34NWh4HbtIc3WNzwB1Y9ULvNGeu5B8h8bVL5cAk4/A==
+
 "@types/resolve@1.17.1":
   version "1.17.1"
   resolved "https://registry.yarnpkg.com/@types/resolve/-/resolve-1.17.1.tgz#3afd6ad8967c77e4376c598a82ddd58f46ec45d6"
@@ -1451,7 +1471,7 @@ base64-arraybuffer@0.1.5:
   resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
   integrity sha1-c5JncZI7Whl0etZmqlzUv5xunOg=
 
-base64id@2.0.0:
+base64id@2.0.0, base64id@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/base64id/-/base64id-2.0.0.tgz#2770ac6bc47d312af97a8bf9a634342e0cd25cb6"
   integrity sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==
@@ -1735,6 +1755,15 @@ cliui@^6.0.0:
     strip-ansi "^6.0.0"
     wrap-ansi "^6.2.0"
 
+cliui@^7.0.2:
+  version "7.0.4"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-7.0.4.tgz#a0265ee655476fc807aea9df3df8df7783808b4f"
+  integrity sha512-OcRE68cOsVMXp1Yvonl/fzkQOyjLSu/8bhPDfQt0e0/Eb283TKP20Fs2MqoPsr9SwA595rRCA+QMzYc9nBP+JQ==
+  dependencies:
+    string-width "^4.2.0"
+    strip-ansi "^6.0.0"
+    wrap-ansi "^7.0.0"
+
 clone-buffer@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/clone-buffer/-/clone-buffer-1.0.0.tgz#e3e25b207ac4e701af721e2cb5a16792cac3dc58"
@@ -1904,6 +1933,11 @@ cookie@0.3.1:
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
   integrity sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=
 
+cookie@~0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.1.tgz#afd713fe26ebd21ba95ceb61f9a8116e50a537d1"
+  integrity sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==
+
 copy-descriptor@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
@@ -1922,6 +1956,14 @@ core-util-is@1.0.2, core-util-is@~1.0.0:
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
   integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
 
+cors@~2.8.5:
+  version "2.8.5"
+  resolved "https://registry.yarnpkg.com/cors/-/cors-2.8.5.tgz#eac11da51592dd86b9f06f6e7ac293b3df875d29"
+  integrity sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==
+  dependencies:
+    object-assign "^4"
+    vary "^1"
+
 cross-spawn@^7.0.2:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
@@ -2049,7 +2091,7 @@ debug@^3.2.6:
   dependencies:
     ms "^2.1.1"
 
-debug@^4.0.1, debug@^4.1.0, debug@^4.1.1, debug@^4.3.1:
+debug@^4.0.1, debug@^4.1.0, debug@^4.1.1, debug@^4.3.1, debug@~4.3.1:
   version "4.3.1"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.1.tgz#f0d229c505e0c6d8c49ac553d1b13dc183f6b2ee"
   integrity sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==
@@ -2312,6 +2354,13 @@ engine.io-parser@~2.2.0:
     blob "0.0.5"
     has-binary2 "~1.0.2"
 
+engine.io-parser@~4.0.0:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/engine.io-parser/-/engine.io-parser-4.0.2.tgz#e41d0b3fb66f7bf4a3671d2038a154024edb501e"
+  integrity sha512-sHfEQv6nmtJrq6TKuIz5kyEKH/qSdK56H/A+7DnAuUPWosnIZAS2NHNcPLmyjtY3cGS/MqJdZbUjW97JU72iYg==
+  dependencies:
+    base64-arraybuffer "0.1.4"
+
 engine.io@~3.4.0:
   version "3.4.2"
   resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-3.4.2.tgz#8fc84ee00388e3e228645e0a7d3dfaeed5bd122c"
@@ -2324,6 +2373,19 @@ engine.io@~3.4.0:
     engine.io-parser "~2.2.0"
     ws "^7.1.2"
 
+engine.io@~4.0.6:
+  version "4.0.6"
+  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-4.0.6.tgz#7268635d64e2154ab5e7f9ef967ad1744a4c41a9"
+  integrity sha512-rf7HAVZpcRrcKEKddgIzYUnwg0g5HE1RvJaTLwkcfJmce4g+po8aMuE6vxzp6JwlK8FEq/vi0KWN6tA585DjaA==
+  dependencies:
+    accepts "~1.3.4"
+    base64id "2.0.0"
+    cookie "~0.4.1"
+    cors "~2.8.5"
+    debug "~4.3.1"
+    engine.io-parser "~4.0.0"
+    ws "~7.4.2"
+
 enquirer@^2.3.5:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/enquirer/-/enquirer-2.3.6.tgz#2a7fe5dd634a1e4125a975ec994ff5456dc3734d"
@@ -2908,7 +2970,7 @@ gensync@^1.0.0-beta.1:
   resolved "https://registry.yarnpkg.com/gensync/-/gensync-1.0.0-beta.2.tgz#32a6ee76c3d7f52d46b2b1ae5d93fea8580a25e0"
   integrity sha512-3hN7NaskYvMDLQY55gnW3NQ+mesEAepTqlg+VEbj7zzqEMBVNhzcGYYeqFo/TlYz6eQiFcp1HcsCZO+nGgS8zg==
 
-get-caller-file@^2.0.1:
+get-caller-file@^2.0.1, get-caller-file@^2.0.5:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
   integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==
@@ -3753,6 +3815,35 @@ karma@^5.0.1, karma@^5.1.0:
     ua-parser-js "0.7.22"
     yargs "^15.3.1"
 
+karma@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/karma/-/karma-6.0.0.tgz#7333193406e23d2b8071025c89b5e8d8ec000d48"
+  integrity sha512-Tc9VlrmAlOUjsi+5tyNlo18TWiOps3wo4HJYqfZImyTrek2gUASmW6q+bEIE1U5w9f+sQ97P5PbbUCp3uVNqrQ==
+  dependencies:
+    body-parser "^1.19.0"
+    braces "^3.0.2"
+    chokidar "^3.4.2"
+    colors "^1.4.0"
+    connect "^3.7.0"
+    di "^0.0.1"
+    dom-serialize "^2.2.1"
+    glob "^7.1.6"
+    graceful-fs "^4.2.4"
+    http-proxy "^1.18.1"
+    isbinaryfile "^4.0.6"
+    lodash "^4.17.19"
+    log4js "^6.2.1"
+    mime "^2.4.5"
+    minimatch "^3.0.4"
+    qjobs "^1.2.0"
+    range-parser "^1.2.1"
+    rimraf "^3.0.2"
+    socket.io "^3.0.4"
+    source-map "^0.6.1"
+    tmp "0.2.1"
+    ua-parser-js "^0.7.23"
+    yargs "^16.1.1"
+
 kind-of@^3.0.2, kind-of@^3.0.3, kind-of@^3.2.0:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
@@ -4272,7 +4363,7 @@ oauth-sign@~0.9.0:
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
   integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
 
-object-assign@^4.1.0:
+object-assign@^4, object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
@@ -5243,6 +5334,11 @@ socket.io-adapter@~1.1.0:
   resolved "https://registry.yarnpkg.com/socket.io-adapter/-/socket.io-adapter-1.1.2.tgz#ab3f0d6f66b8fc7fca3959ab5991f82221789be9"
   integrity sha512-WzZRUj1kUjrTIrUKpZLEzFZ1OLj5FwLlAFQs9kuZJzJi5DKdU7FsWc36SNmA8iDOtwBQyT8FkrriRM8vXLYz8g==
 
+socket.io-adapter@~2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/socket.io-adapter/-/socket.io-adapter-2.0.3.tgz#372b7cde7a535fc4f4f0d5ac7f73952a3062d438"
+  integrity sha512-2wo4EXgxOGSFueqvHAdnmi5JLZzWqMArjuP4nqC26AtLh5PoCPsaRbRdah2xhcwTAMooZfjYiNVNkkmmSMaxOQ==
+
 socket.io-client@2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.3.0.tgz#14d5ba2e00b9bcd145ae443ab96b3f86cbcc1bb4"
@@ -5281,6 +5377,15 @@ socket.io-parser@~3.4.0:
     debug "~4.1.0"
     isarray "2.0.1"
 
+socket.io-parser@~4.0.3:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/socket.io-parser/-/socket.io-parser-4.0.3.tgz#2c494f2de1e7c1b40a14ba1512227e9798d8b10e"
+  integrity sha512-m4ybFiP4UYVORRt7jcdqf8UWx+ywVdAqqsJyruXxAdD3Sv6MDemijWij34mOWdMJ55bEdIb9jACBhxUgNK6sxw==
+  dependencies:
+    "@types/component-emitter" "^1.2.10"
+    component-emitter "~1.3.0"
+    debug "~4.3.1"
+
 socket.io@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.3.0.tgz#cd762ed6a4faeca59bc1f3e243c0969311eb73fb"
@@ -5293,6 +5398,21 @@ socket.io@^2.3.0:
     socket.io-client "2.3.0"
     socket.io-parser "~3.4.0"
 
+socket.io@^3.0.4:
+  version "3.0.5"
+  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-3.0.5.tgz#b4328116b6b34f76270725a4e35b75e2348d2264"
+  integrity sha512-5yWQ43P/4IttmPCGKDQ3CVocBiJWGpibyhYJxgUhf69EHMzmK8XW0DkmHIoYdLmZaVZJyiEkUqpeC7rSCIqekw==
+  dependencies:
+    "@types/cookie" "^0.4.0"
+    "@types/cors" "^2.8.8"
+    "@types/node" "^14.14.10"
+    accepts "~1.3.4"
+    base64id "~2.0.0"
+    debug "~4.3.1"
+    engine.io "~4.0.6"
+    socket.io-adapter "~2.0.3"
+    socket.io-parser "~4.0.3"
+
 sortobject@^4.0.0:
   version "4.14.0"
   resolved "https://registry.yarnpkg.com/sortobject/-/sortobject-4.14.0.tgz#1c1b09862033c93731198a4f7d25eb5140328123"
@@ -5814,6 +5934,11 @@ ua-parser-js@0.7.22:
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.22.tgz#960df60a5f911ea8f1c818f3747b99c6e177eae3"
   integrity sha512-YUxzMjJ5T71w6a8WWVcMGM6YWOTX27rCoIQgLXiWaxqXSx9D7DNjiGWn1aJIRSQ5qr0xuhra77bSIh6voR/46Q==
 
+ua-parser-js@^0.7.23:
+  version "0.7.23"
+  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.23.tgz#704d67f951e13195fbcd3d78818577f5bc1d547b"
+  integrity sha512-m4hvMLxgGHXG3O3fQVAyyAQpZzDOvwnhOTjYz5Xmr7r/+LpkNy3vJXdVRWgd1TkAb7NGROZuSy96CrlNVjA7KA==
+
 unc-path-regex@^0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/unc-path-regex/-/unc-path-regex-0.1.2.tgz#e73dd3d7b0d7c5ed86fbac6b0ae7d8c6a69d50fa"
@@ -5940,6 +6065,11 @@ value-or-function@^3.0.0:
   resolved "https://registry.yarnpkg.com/value-or-function/-/value-or-function-3.0.0.tgz#1c243a50b595c1be54a754bfece8563b9ff8d813"
   integrity sha1-HCQ6ULWVwb5Up1S/7OhWO5/42BM=
 
+vary@^1:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
+  integrity sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=
+
 verror@1.10.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"
@@ -6180,6 +6310,15 @@ wrap-ansi@^6.2.0:
     string-width "^4.1.0"
     strip-ansi "^6.0.0"
 
+wrap-ansi@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
+  integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
+  dependencies:
+    ansi-styles "^4.0.0"
+    string-width "^4.1.0"
+    strip-ansi "^6.0.0"
+
 wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
@@ -6192,7 +6331,7 @@ write@1.0.3:
   dependencies:
     mkdirp "^0.5.1"
 
-ws@^7.0.0:
+ws@^7.0.0, ws@~7.4.2:
   version "7.4.2"
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.2.tgz#782100048e54eb36fe9843363ab1c68672b261dd"
   integrity sha512-T4tewALS3+qsrpGI/8dqNMLIVdq/g/85U98HPMa6F0m6xTbvhXU6RCQLqPH3+SlomNV/LdY6RXEbBpMH6EOJnA==
@@ -6234,6 +6373,11 @@ y18n@^4.0.0:
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
   integrity sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==
 
+y18n@^5.0.5:
+  version "5.0.5"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-5.0.5.tgz#8769ec08d03b1ea2df2500acef561743bbb9ab18"
+  integrity sha512-hsRUr4FFrvhhRH12wOdfs38Gy7k2FFzB9qgN9v3aLykRq0dRcdcpz5C9FxdS2NuhOrI/628b/KSTJ3rwHysYSg==
+
 yallist@^3.0.0, yallist@^3.0.3:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
@@ -6260,6 +6404,11 @@ yargs-parser@^18.1.2:
     camelcase "^5.0.0"
     decamelize "^1.2.0"
 
+yargs-parser@^20.2.2:
+  version "20.2.4"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-20.2.4.tgz#b42890f14566796f85ae8e3a25290d205f154a54"
+  integrity sha512-WOkpgNhPTlE73h4VFAFsOnomJVaovO8VqLDzy5saChRBFQFBoMYirowyW+Q9HB4HFF4Z7VZTiG3iSzJJA29yRA==
+
 yargs-unparser@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/yargs-unparser/-/yargs-unparser-2.0.0.tgz#f131f9226911ae5d9ad38c432fe809366c2325eb"
@@ -6303,6 +6452,19 @@ yargs@^15.3.1:
     y18n "^4.0.0"
     yargs-parser "^18.1.2"
 
+yargs@^16.1.1:
+  version "16.2.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-16.2.0.tgz#1c82bf0f6b6a66eafce7ef30e376f49a12477f66"
+  integrity sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw==
+  dependencies:
+    cliui "^7.0.2"
+    escalade "^3.1.1"
+    get-caller-file "^2.0.5"
+    require-directory "^2.1.1"
+    string-width "^4.2.0"
+    y18n "^5.0.5"
+    yargs-parser "^20.2.2"
+
 yeast@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/yeast/-/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"