* Copied files containing code for tools from Action Editor to use as a base for the Graph Editor's tools. The toolsets are now very similar, so it should just be a case of making a few tweaks here and there. Currently all of these tools are #if-def'd out, as there are still a few things to clean up.
(BUILDSYSTEM MAINTAINERS BEWARE!)
* Tweaked some UI stuff (width of mode selector in header, names in the spacetype choosing menu)
* Fixed a few bugs which were causing crashes when loading old files with IPO Editors open.
