add code-mirror module
Merge branch 'master' into code-mirror
Move componentDidMount up, for consistency.
Wire codemirror up to dispatcher.
styles!
Merge branch 'code-mirror' of https://github.com/Structural/editorialish into code-mirror

Conflicts:
	src/less/mixins/variables.less
Color header hashes separately.
Clean up codemirror overrides.
Move font name into a variable.