I like it, it looks really great!

However, the html offers a couple of great chances to use angular directives or some databinding. Especially the custom directives offer a great way to show the semantics or the intent of what the page is all about, so that in the end the dashboard could read somthing like:

   <overview>
     <users></users>
     <servers></servers>
     <documents></documents>
     <tickets></tickets>
   </overview>

   <server-list></server-list>
   <user-list></user-list>
   <extras></extras>
   <...></...>

Something like that; you get the idea.

Keep up the great work!