Fixed links for profile editing
Fixed empty button
Fixed Project::findAllIndexedBySlug when no projects exist
Fixed misc errors in database structure sql queries
Updated structure and initdata for feed messages
Fixed storing of AVDelay when project has no languages
Enable more precise timeline expansion
Merge branch 'master' of http://git.fem.tu-ilmenau.de/cccongress

Conflicts:
	docs/01_structure.sql
fixed spelling error
added notes for postgres 9.1
added default admin user