1.8.7

Bug fix release.

Fixed: Course created email sent twice
Fixed: Menu items with blank URL disappeared when the private messages functionality were disabled in settings.
Fixed: Answers disappear after adding a question
Fixed: Multiple Choice random order was applied by default even if the user didn't select this.
Fixed: TextArea question answers not displaying correctly in grading.
Fixed: Question type contains author name
Fixed: "Other Lessons" title always shows, even with no lessons under it.
Fixed: auto-grading not working for gap fill
Fixed: Double forward slash when loading templates
Fixed: Invalid prompt message when trying to leave the Add Question page
Fixed: Installing the sensei pages, the dropdowns for both pages are still empty on the first load.
Fixed: allow for course products to be part WooCommerce product bundles
Fixed: removed WordPress 4.3 table list notices
Tweak: Give the teacher the right access to Lesson comments
Tweek: Users with teacher role will now be sent to admin after login.
Tweak: Show admin bar to users who can 'edit_courses'