Completed activity functionality
Merge branch '20140407_Sprint_7' of https://github.com/Film-Skills/wolaslite-client into 20140407_Sprint_7
Changed the StudentAssessment view
completed paging, added navigation buttons
completed add/get activity fucntionality, pagination for activities and added the navigation tabs
Merge branch '20140407_Sprint_7' of https://github.com/Film-Skills/wolaslite-client into 20140407_Sprint_7