WIP - added and styled login/logout links
Make GitHub authorization routes work

Yay! Login/logout works!
Add a link to user's home page in account block
Redirect user to their home page on authorize/return
Set cookie so it's available across subdomains
Add edit button to gist list items
Verify session user against subdomain and only show edit link if they match
Install and style ACE
WIP - Gist updates are now saved! YAY!
Refresh cache on update
Refactor some styles
Make My Drafts link not a button
Misc. fixes
Swap left/right-responsive-headers so that it's actually correct
Extend button styling where possible
Tweak GH account block styling
Move Save and Preview buttons to the left-hand column
Add Cancel button
Merge branch 'master' into authentication

Conflicts:
	sass/modules/_site-header.scss
	views/layout.html.erb
Merge branch 'master' into authentication

Conflicts:
	sass/_modules.scss
	sass/modules/_unrenderable-files.scss