[RegisterationForm] Added new link and improved.
Fixed compile issue also removed QMusicPlayer on Mac.
Improved in showing splash-screen also add support to use progressBar.
Set indentation for treeWidgets just on Windows
-also a compile fix
Correct fix for d762437c
-also some renaming
-and a better bookmark file creating code
Updated copyright
[DataBaseUpdater] reset comboBox on download errors.
Some code improvements and some fixes in downloader
Moved currentIconThemePath() from SaagharWindow to Settings
Fixed some issues about icons