Reorganize navbar buttons

Left side for other people's requests, right for your requests (and the admin button for admins). Also moved the submit button into the navbar, as that's what the first-user user will usually want to access.
List the Divisions a user has access to

Turning list_submit into a user page.
Renaming 'Submitted' to 'Personal'

First in many steps in reorganizing the views and URLs.
Change 'submitted' requests to 'pending' requests
Stop hardcoding prefix for requests BP in filters BP

Also fix a half-done change form the last commit changing 'complete' to 'completed'.
Un-prefix requests views

They're the most used URLs, and even if they're not being typed out explicitly it doesn't make sense to have the prefixed all the time.
The root url now redirects to a user's personal list