Allow sile-sink to be build for packaging to npmjs.com and add more documentation and examples (#36)

sometimes the update happens during connectedCallback already
and there we need jquery

Properly disconnect from the event

Add scroll to top when switching activities (#37)

See merge request !10

Takes a package name and a dest path. This way we can more eassily change the
layout and it will error out on package name typos or missing packages.

as is the case with font packages

They were hardcoded in more places

The rollup json plugin allows accessing keyss with named exports,
so we can read the package name at build time.

Add a scope to all package names and set to version to 0.1.0

See merge request !8

Add a scope so we don't have to care about naming conflicts
and set the verison to 0.1.0 since we don't have a stable API yet.

Chromium sometimes hangs when multiple karma runs happen
at the same time :(

Now that we have clearer separated sections in responsive mode the different
spacing stand out so unify them a bit.

Also in case the menu is in sticky mode it's kinda small and hard to hit via touch
so add some padding there and remove some margin from the headline instead to keep
the overall height the same.

tests: use tdd mode, unify karma config, don't depend on puppeteer

See merge request !7

While it's nice to have a fixed chrome version it slows down the yarn install,
downloads a lot of things, and the chrome version depends on various
system packages so one needss to have chromium installed anyway.

This means developers that want to work on tests need firefox and chdomium installed.

Sadly I couldn't find a way to make browsers optional in case the developer
only has one installed.