Revert "Comment out the navbar links for now"

This reverts commit 7e3c8f0095b75c8d6d6285b3dde372348360fbce.
Fix link to ticket list in navbar
Improve ticket form UI
Remove "Back" link from the new ticket page
Views: Replace "Computer" with "Computer #" for usability
Make text in the navbar links match the page headers
Add missing icons and make a minor capitalization tweak
Use a check mark icon instead of a plus icon for the "Create ticket" button