improved the getter, setters and findByEmail tests for User
Fixed an error in the finding of pending invites
Added test for the skill relationship, also removed some unused methods
Edited the initial data to have better names for users
Deleted all the unused methods from User
Fixed the naming of the tests to use better names
Fixed the naming of the skill tests and deleted an unused method
Fixed some naming and created and fixed some tests for Practical model
Fixed naming of some tests, also cleaned up the practical group tests
Added the functionality of an owner to practicalgroups, also renamed some properties and functions
Fixed the Invite test to have proper naming and structure
Added a new test for invite, also fixed some checkstyle warnings
Fixed the findWithPracticalAndUser, didn't always returned the correct value, wrote a test for this
Cleaned up practicalgroup and practicalgrouptest also added two tests to invitetest to test the accept function which showed an error which has also been fixed
Fixed the accept tests, added a reject test and fixed some errors
Fixed some checkstyle warnings
Changed the functionality to always add the owner to the groupmembers, this made looking up a practicalgroup much easier
Fixed the invitetest to work with the new groupsizes
Fixed tests that failed due to the changing of the initial data
Fixed some style comments