CheckedOut Files Report solved

- Finished CheckedOut Files report
- Introduced ng-repeat-finished directive
- Replaced $timeout with $watch within  DataTables directive
- Fixed view scrolling issue on report change

To-Do
- Home page
- Comment checkedOut report code
- Refactor checkedOut files code for reuse with different reports
- UI improvements
- Introduce cross domain application use
- Look into making checked out files report more interactive with SP
functions like "Discard Checkout", view form properties, etc etc.