clean up `walk` utils method
change regex for gzipping to gzip all content types that are prefixed with `text`
Merge pull request #419 from TJkrusinski/master

clean up `walk` utils method
Convert tabs to spaces.
Merge pull request #420 from adrianedworthy/tabs-to-spaces

Convert tabs to spaces.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	public/articles/views/create.html
	public/articles/views/edit.html
	public/articles/views/list.html
	public/system/views/index.html
	server/views/layouts/default.html