Add a floating action button for reloading Lists.

It shows as soon as the very first list element becomes 100% invisible
and will stay until the first element becomes visible again (where pull
to refresh would the the choice of action).
Merge pull request #66 from Leoz83/master

fix italian translation typo
Fix navigation footer colors for dark style
Servicelist: scroll to top of list when user navigates
1.0 beta 30.4
Remove duplicate code in themes / themes-v11