[SP] Fix incorrect casting of pointer type in win_glimp.cpp from cvar value.
[SP] Buffer safety on buf when copying from glConfig.renderer_string.
[MP] Fix missing binds in UI that were mistakenly removed during the cleanup.
Remove +force_jump binding as its not used.
[SP] Cleanup of binds code in UI. Removed some unused code, and add some const.
[SP] Fix an invalid null deref check in the slider code.