Touchup-fix for Issue 1549: Keyboard camera panning only works in 3 directions using WASD keys.

I didn't like the way Advanced menu flickered, so I provided a setting to prevent the toggle that way altogether.

Adds LiruUseAdvancedMenuShortcut
[Branding] Linux scripts now made from template by cmake
[Branding] Use viewer channel as desktop icon name to match Windows and Mac
Introduce function isXboxLike, to support Xbox-like controllers, even if they don't identify as Xbox.

Support for Ouya controller added.
Merge branch 'master' of git://github.com/Lirusaito/SingularityViewer

Conflicts:
	indra/newview/linux_tools/refresh_desktop_app_entry.sh.in