First steps to cleanup the navbar generator code.

refs #119
Indention changes only.
Update navbar for login page.
Merge branch 'devel' into navbar
More navbar items.
Helper function to generate SVI-wiki-link.
Generate navbar entries using includes.

refs #119
Update "Report issue" link + icon.

So it matches what Aaron created.

refs #119
Merge branch 'navbar' into devel

Conflicts:
	home.php
	user_management.php

refs #119
Add "Report an issue" button.

Using the include-based navbar now.

fixes #119