Build V.1.31.0

– Sort Students in Class Overview by last name #1510
– Close or Grade assignment menu item dynamically changes based on rubric present #3041
– Add Email as Acceptable Input For Adding Students to a Class #2773
– Textbox tinymce toolbar actions are not saved automatically #2985
– Rubrics criterion points not saved correctly when set to 0 #2977
– Rubric criterions order not saved correctly #2970
– Missing outline elements when customize and assign a template/lesson #2969
– Deleted video reading remains displayed in template or assignment #2966
– Scrollbars position not updated when close notification #2965
– Error when saving a rubric with a new assignment #2935