Add: delete button
remove debugging code
Add: informatino and address to all kinds of booking-objects
Add: directives
Make test suite usable
Add lodash as an injected dependency instead of global
Repair: errorHandler
Scaffold: availability overview
Add: styles
Add: html mock
Add: controller
Add: navbar link
Merge branch 'feature/availability-overview' into develop
Hotfix: right-align interval in availability table
Add: merge method to Interval class, and refactor some loading code
Refactor a bit
Interval merging fixes issue #57