Maintenance 10/15/13

Alright, here's the changes for tonight:
+Minor change to keyframes: (Dark lIne rendered at top). Tell me what
you think.
+Enabled deleting layers even if its the last layer.
+Fixed timeline not redrawing the selected keyframe when adding /
removing a keyframe. Now updates the way the selected frame is drawn
when you add/remove a keyframe.
+Fixed glitch with joint lengths not calculating when loading a file
(view changes in FileIO.cs to see how). This fixes the IK breaking when
loading custom figures, however the random point at (0,0) on tween figs
still exists; I'm currently looking into that.
+Fixed the right-click to drag figure being hard-coded for default
sticks.
+Added right-click to drag figure function to Stick Editor.

Guys, let's get this update out tomorrow please.