Admin styles and UI.

Also allow changing of author of blog post.
new blog link on index
fixing work image upload. closes #68
Merge pull request #70 from cremalab/work-images-68-rb

fixing work image upload. closes #68
Merge branch 'master' into admin-rb

Conflicts:
	app/views/works/_work.haml
Merge pull request #66 from cremalab/admin-rb

Admin styles and UI
Merge branch 'master' of github.com:cremalab/cremalab.com into navigation_styles-69-rl
Refactored Icons and removed unused 'Base' stylesheet files.