Fixed a problem with the student data not saving on an auto graded draw step due to trying to jsonify a cyclical object
Merge branch 'master' of https://github.com/WISE-Community/WISE-VLE
Reversed highlight color of frames in WISE Draw steps (active frame is now white, inactive frames are gray - to match convention)

- Edited confusing alert text in Explanation Builder steps (step number and title now surrounded by quotation marks)
Added default step term for new projects (instead of empty string)
Fixed a small bug when an auto graded draw step has its max chances set to empty string
Merge branch 'master' of https://github.com/WISE-Community/WISE-VLE
Merge branch 'master' of https://github.com/WISE-Community/WISE-VLE into authoringv2