Final Release for 3.X

Final Release for 3.X before depreciation and moving to support 4.0

Version 2.1

1. Behat Tests were added
2. Unit Tests were added
3. Fixed EMDL-345

Version 2.0

1. Hints are now actually saved and are copied when the question is duplicated.
2. Hints are displayed when the setting is activated.
3. Penalties are included into the rating if for example hints are enabled and displayed.
4. Privacy Class has been included.

Version 1.0

Latest code submitted by eDaktik code, as-is.