Rename the "sum"/"diff" score field alias from "f-d" to "k-d" as it's
actually kills-deaths, not frags-deaths.
Ignore some compiler files
Fix a typo spotted by MrBougo which prevents cl_simpleitems_postfix from working correctly
Merge remote-tracking branch 'origin/sev/simpleitems_postfix'
Make the server category text color editable in menu skins
Make the tooltip text color editable in menu skins
Make the main text color editable in menu skins
Add new menu skin variables to existing skinfiles, using default values
Merge remote-tracking branch 'origin/sev/menu_text_colors'
Merge remote-tracking branch 'origin/Mario/ignore_files'

* origin/Mario/ignore_files:
  Ignore some compiler files
Remove the colorbutton overlay image (gfx/menu/*/color) and directly colorize the button images (gfx/menu/*/colorbutton_*)
Adjust existing menu skins for the new colorbutton
Rewrite HUD_Notify() to align messages by their icon, establishing a neat column. Also move calculations out of the for-loop.
Optimize HUD_Notify() by adding a counter for a quick-return conditional. Also simplify the HUD editor representation.
Add new cvar hud_panel_notify_icon_aspect, to choose the aspect ratio of the total drawing area per icon
Merge branch 'sev/menu_colorbutton_clean'
Merge remote-tracking branch 'origin/sev/hud_panel_notify'
Remove COMPAT_XON010_CHANNELS.
Add the ability to cut off slime/lava sounds.
Rename CH_TUBA to CH_TUBA_SINGLE. It already was a single-channel.