Merge pull request #9 from wunki/powerline-colors

Powerline colors
Add diff-refine-added and diff-refine-removed
Add definitions for coffee-mode faces and magit-log-author
Swap and reorganise the basic font-lock-* colors
Make the interactive theme functions set the theme exclusively
Drop -face suffix from js2 face names to match upstream
Explicitly define outline-* faces

Now that the font-lock-* faces have changed, we redefine the
outline faces to avoid having any of the outermost outline
levels clash with special (green/red/orange) faces inside
org docs.
Add macrostep expansion face