* These settings can now be edited + keyframed (using IKEY over the button only for now... other cases will fail) * Reshuffled some of the keyframing code to make this sort of thing easier to do. Also, restored corrections for NLA-mapping when inserting/removing keyframes. TODOS: * animation editors don't show these keyframes yet * the buttons don't change colour yet to reflect this state. How to do this efficiently? * allow keyframing of these in more places * more robust UI handling for this.