Blender Git Loki

Durian Requests for Graph Editor Visibility Toggles (2):

Improved the hotkeys for toggling the visibility of channels in the keys area for the Graph Editor.

* VKEY - this is now used for making only the selected channels visible, hiding everything else
* Shift-VKEY - the old toggling behaviour

In addition to this, I've made these toggling operators flush the visibility flags up/down the hierarchy, just like clicking on the channels manually do. There are still a few minor oddities to iron out, but it should be better than before.

Also, fixed a bug with these toggling operators introduced during my earlier commit to make filtering work ok. It's always tricky getting these layers of checks just right, so hopefully nothing breaks now again...