User profile pages (#74 & #110)

Added a profile page at /profile/:userId
Added ability to edit profiles
Added a drop down to the header to view and edit your profile page, and to log out
CMS user list now has a right-click context menu, to view, edit and delete users
Reworked Header component to work on small/mobile screens

Changes
Background color is now applied globally instead of in each view
api/login now also returns the user id and initials
Changed all occurrences of window.location() to use Vue routing
Added autocomplete fields to register, login and profile edit pages

Fixes
Fixed some minor http status code inconsistencies

conclurer / midnightboard