Yet another picture viewer.

Installation of AISS is recommended.

Version history:
- 1.5 (1st May 2013):
 - Picture rotation: Added error checking and reporting
 - Added new icon. Thanks tommysammy !
 - Enabled file type checking
 - User can enable/disable file name sorting
 - Added help window
 - Iconification changed, hopefully no more crashes
 - Enabled full directory loading even if only one file was selected
   (todo: sub directories are not handled yet)
 - Todo: Scrolling thumbs with scrollers is slightly buggy still

- 1.4 (3rd January 2013):
 - Fixed iconification in full screen mode
 - Combined separate directory and file loading
 - Files are sorted in alphabetical order when a directory is loaded
 - Fixed file name displaying in the window title bar
 - German language included