Fully functional beautiful graphs
Graphs update when question moves on.
Added a Pie chart and graph selector. Pie chart dodgy, possibly due to old version of app.
Merge remote-tracking branch 'origin/master'

Conflicts:
	Lectures+ Lecturer/res/layout/present.xml
	Lectures+ Lecturer/src/com/InstantFeedback/Lecturer/LecturerPrepareQuestionsActivity.java
Fixed bugs:
-stop question popup
-make history invisible
-add space to name
-disable answer when no question
-trim names
-add space to count
-answers remain checked if next question has less of them
cleanup