Added pie chart to visualize exam results
Fixed exam results landscape view, fixed crash in onview for UI editor
Created sliding tabs for exam results activity
Created new packages, implemented exam history graph UI, repo methods WIP (also, still no visible tabs)
Exam result graph and history UI and backend now works
Added arrows to hint at swipeable view, as visible tabs require appcompat
v7 or actionbar, also fixed sorting of exam history bars.
Updated readme's TODO list