[sailfish-browser] Change to use browser specific booster
Without tabs show "Type URL or search" text in toolbar
Merge pull request #229 from rainemak/booster

[sailfish-browser] Change to use browser specific booster
Add fullscreen gesture hint
Fix First usage page
Add guards to the grabToFile() so that incorrect loadProgress does not break it

The backForwardNavigation guards that we don't call grabToImage
before page url has changed. Previosly when tapping quickly back button due
to incorrect loadProgress level (100) we ended up grabbing illegal
content caused crashing.
Fix cover actions when no tabs available
Fix TabView empty state
Show viewplaceholder when history didn't return search results
Add viewplaceholder for find-in-page view
Animate tab button when a new is requested
Add text that is shown in cover when we do not have tabs

Remove this once we get clearing of the cover working and
move this to the real cover.
Hide pulley menu, close tab button, title, and the opacity ramp in cover
Improve overlay animator states

When returning back from the cover, when new state is set immediately.
Merge remote-tracking branch 'origin/master' into overlay-dual-toolbar