Improves the RepositoryView with an InfoPanel.
Improves hit detection while a HiddenPanel is opened.
Other small fixes: notification text aliugnment, InfoEditionPanel typo, ScenesTableList thumbnails regeneration, etc.
RepositoryElements now are centered on the screen.
Greatly improves Android performance by fixing the FileHandle#exists for internal files.
Merge pull request #750 from RotaruDan/proposedFixes

Other proposed fixes.