Added getUndoableFunction to JSAV.utils
Merge pull request #160 from X455u/undofunc

Added getUndoableFunction to JSAV.utils
Allow addition of classes to question dialog through options
Minor fixes to examples
Removed old unused css
Translated question support; improved configurability of questions
Minor fixes to question support
Disable animation controls when showing a pop-up question
Simplify initial and model structure handling
Revert previous simplification which broke some exercises
Always log the current animation step
Student loses points for undone steps; at most 1 point per step
Removed margins from jsavedgelabel
Fixed list edge labels (issue #163). Refactored list layout code.
Merge pull request #164 from X455u/jsavedgelabel-margin

Removed margins from jsavedgelabel
Merge pull request #165 from X455u/list-label-fix

Fixed list edge labels (issue #163)