[ #29875 ] Add NumberCategoryModel to keep track of phone number categories (for i18n)
[ #29875 ] Fix call delegate
[ #30279 ] Fix video support
[ #30280 ] Add an OpenGL renderer

It is as bad as the software one. Hopefully this will be improved
in future commits
[ #30280 ] Drop QImage conversion with pure OpenGL backend, move rederer to a QThread
Add #include <KLocale> where necessary
Fix build on GCC 4.6 (missing includes)
[ #30280 ] Try to synchronize video threads

There is one last race condition between the daemon and the client
(will be fixed soon)