Merge pull request #961 from johndrinkwater/master

Menu item changed from About to Help.
Suggest to install KDE 4.9.3+ for the KDE compositing fix
Merge pull request #999 from devurandom/patch-1

Suggest to install KDE 4.9.3+ for the KDE compositing fix [accepted, with no changes]
Updated Catalyst for older cards from 12.6 to 13.1

Updated Catalyst for older cards from 12.6 to 13.1 and added "Legacy" in front for clarification. The Catalyst 13.1 legacy driver also supports the the necessary extensions for Team Fortress 2 so it should be the recommended driver.
Merge pull request #1108 from bootkiller/patch-1

Updated Catalyst for older cards from 12.6 to 13.1, change accepted
Update RelNotes.md

Updated content regarding TF2 performance being affected by compositing.
Update issues description to point to Source-1-Games & halflife repos.