Replaced Marks Table with Bar Charts

- Now finally using PNChart

-- Need to add absolute values
Fixed PageViewController height so that full table view shows

- No Scrolling Problem anymore.
Shake bug Fix

- Fixes bug - when swiping on detailView - the shake to reset stopped
working.
Marks calculation bug fix

- Finall found the marks calcuation bug - Fixed
- New Marks view is now complete with label
- DetailView Table fits perfectly now