Add initial foundation for installer

- Copied BTS default layout
Copy Display UI installer text
No header bar
Add installer-specific styles to distinguish it

- Layout still inherits BTS app stylesheet
Add installer-specific styles to distinguish it

- Layout still inherits BTS app stylesheet
Merge remote-tracking branch 'dev/master'
Add installer-specific styling.
Merge branch 'master' of ssh://www1.vnet.freddyware.net/srv/bts

Conflicts:
	public/css/installer.css