* 2D Animation: lots of changes from the grease pencil team. Properties
editor layouts, brush and material settings, and more.
* 3D Viewport: wireframes set to 1.0.
* World: use nodes by default.
* Node Editor: use narrow toolbar.
These can now be acessed from the File > New, Ctrl+N, or the splash screen.
Since these are application templates, users can save a separate startup.blend
for each. User preferences are shared between these templates though.
This also fixes some issues in the default startup.blend (triangulated cube..).
Differential Revision: https://developer.blender.org/D3690
