Fix some of problems with favorite folder view:

- fix icons
- fix i18n
- fix signal/slot (probably some more to do)
- fix deprecated calls
- increase rc version number so actions show up
- fix some other warnings

Still not fixed:
- total freeze after changing the view's visibility in the config
- the names of the folders don't show up (only after renaming)
- the tooltips don't work (and probably more)

Why was this commited at all? We are in feature freeze, specially to avoid wasting time fixing broken new features.