CleverRaven/Cataclysm-DDA — pull request #7295 by cSep (2014-04-19 13:13:28+00:00)
Title: enhances the action menu

This PR was #7256 but i messed up that branch learning about rebasing.

- combines the back/cancel options
- centers the menu
- unavailable choices dont show
- unbound quicksave/debug/suicide dont show.

- new signature for uimenu to allow 'cancelable'
- fixes uimenu to render '!'