Tried to improve image handling

This uses private QImage access from QQmlImage.
Saves the images when downloaded, and use cached
files when loaded.
Fixed translation issue
Added support to display photos from post
Better behaviour for solving the attached media

FQL is used to check which object is really attached
to the post, and go to it, during type solving.
Bugfixed implementation for image browsing

This time, there shouldn't be any problem related
to image browsing. No more delegates being created
and gallery rewinding when going to comments.
Added busy indicator on user page
Added more translations
Added changelog, set changelog for 0.1.11

[F] New translations: German and Hungarian
[B] Section separator in friends page are now displayed correctly.
[B] Improved images handling. There should be less freezes.
[F] It is possible to open photos and albums from news feed.
[B] Performance improvements for image browsing.
[F] The pulley menus in news feed page and user page now glow when feeds are loading.
Added capabilities to display changelog

[F] When Friends is updated, a list of new features and bugfixes is now displayed.
Added a remorse timer for disconnection

[F] A remorse timer now prevents you from disconnection from Facebook if you triggered the action by error.