major updates

-Update 02/12:
->header color changed;
->loading screen changed (more optimized);
->added ButtonRow on details page;
->Quit and categories buttons on header
->added "More" role on Xml List for more info about the app
(videos,review..)
->Apps now separated by categories (network/games..)
->Install function changed string path

-Bad things
->slowness when changing to categories view due a qt bug:
https://bugreports.qt-project.org/browse/QTCOMPONENTS-1194
If someone can solve this please let me know.