Tweak anchorable panel styles
Improve brush names, and use single image for each anchorable pane icon (instead of one image for each colour)
Tweak document tab styles
Tweak document pane and tool window tab styles
Tweak auto hide styles
Slightly improve navigator window
Reference latest version of AvalonDock
Tweak floating document window styles
Tweak floating tool window styles
Remove obsolete brushes
Tweak navigator window styles
Add dark theme
Add blue theme
Fix tool window border in blue theme
Merge pull request #3 from tgjones/master

Improve styles