Changes for 2.044 -> 2.045

Rules
 * Improve youtube support for playlist/channel pages. Give correct video
   quality messages

Display (pop)
 * Fix bug where buttons can be disabled
 * Allow right-clicking on results to show download options menu

Download methods
 * Keep correct filename for DownThemAll, even when a http redirect is
   followed (by setting the filename mask instead of fileName itself.