Admin UI elements for tracking fields
Use buttons where possible for accessibility

Also added a proper focus state to buttons for better visual feedback
preview buttons should use the default button style
Displaying tracked metadata in the Admin UI
Added StorageJS dependency
Removed storage from Master branch

So other fixes can still be done
Added syntax highlighting
alt. implementation of #634, sortOrder type detection fix
Can toggle display of created / updated dates in list view
Added syntax highlighting + white chars
Adding order UI for tracking date fields
Implementing proper ascending / descending UI for tracking sort
Fixed bolded text
Improved white space in production mode, fixes #642
Merge pull request #651 from grabbou/feature-better-readme

Better readme fixes #575
Merge branch 'master' into react

Conflicts:
	public/styles/keystone.min.css
	templates/views/item.jade