Fix indentation and formatting of str_clean_whitespaces
Fix some spelling in src/base/system.h

termineted -> terminated
Remove redundant MapScreenToGroup() and declarate it in RenderTools
snd_enable_musicnow controlls menu music.

don't poll on music toggeling
Merge pull request #1148 from ghost91-/menumusic

snd_enable_musicnow controlls menu music.
Merge pull request #1204 from cinaera/clean_rendertools

Cleanup MapScreenToGroup
Merge pull request #1197 from heinrich5991/pullreq_1197

Fix some of #1138
Add enum for envelope preview modes
Add cubic bezier-FCurves support  for envelopes
Fix envelope preview commit
Correctly preview the envelope curves
Fix some numerical issues at bezier envelopes
Fix envelope editor scaling
Clamp bezier tangents and re-fix envelope preview
Remove unnecessary debug variable
Correctly name functions, remove old code and fix bezier solver
Fix header inclusion
Merge pull request #1223 from cinaera/bezier

Add beziercurves to envelopes
Fix building (missing header)
Merge pull request #1224 from cinaera/fix_build

Add missing include for bezier rendering code