Game OSD: Video filter dialog updates

[garbear]

This PR concludes the work I've done to enable the GSoC shader work (garbear#86) to be eventually included in master:

• Video filter dialog: Change select action VelocityRa/xbmc#21 - Selecting a filter closes the dialog instead of resuming gameplay
• Add filter description to video filter dialog VelocityRa/xbmc#17 - Adds a description field giving information about the filter
• Refactor to remove RetroPlayer's GUI dependence introduced in Game OSD: New dialog for video settings #12639

Also included are some features requested on the forum:

• Set ID 1 to dialog names for View Mode and Video Filter dialogs (request post)
• Close OSD when "m" is pressed (same post)

Motivation and Context

Final changes required for shaders.

How Has This Been Tested?

Tested in Windows, Linux, OSX and RPi

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

[garbear]

Fixed a TODO that I left for fixing a threading issue. I think this can go in now. jenkins build this please