Working on implementing tableView.
Merge pull request #4 from OrangeJam/bjornorri

Implemented timetable parsing
Merge branch 'master' into assignmentsView
Implemented ugly tableview to display data
Added empty data store implementation
Added test for notification
Implemented notification pattern for updating tableView
Added unregister for notification to AssignmentsTableViewController
Not calling fetchAssignments on launch
Added notification for networkerror and fixed test to not rely on userdefaults
Merge pull request #5 from OrangeJam/kari

Tableview for assignments
Parser now identifies and removes duplicates when parsing classes
Small fix in parser test case
Added unit tests for class equality operator
Added classes to the data store
A little refactoring in the data store