Minor changes
Added unit testing target and a first test
Refactoring and more tests
New menu. Closes #166
Removed autorelease init-methods
Refactoring: Extracted avatar caching
Refactoring: Prefixed own classes
Refactorings around app constants
Refactored MenuController
Moved some more constants
Removed superfluous apiURL and endpointURL properties
Refactoring: Unified User- and OrganizationCell
Added issue author. Closes #174
Refactoring: Cleaned up domain classes
Refactoring: Cleaned up cell classes
Refactoring: Cleaned up controller classes
Display user objects login in menu
Updated attribution
Refactoring: Moved QuertzCore import to prefix
Refactoring: Changed pull to refresh library