EdX testing notes

[achirkin]

• [ ] customize submission message in self-paced runs
• [ ] Hide download geometry button for edX students
• [ ] redundant "You are now logged in" message after design is submitted by edX student
• [ ] make lines visible
• [ ] update FAQ section
• [ ] If user is not logged in and views a student submission, the user can move blocks. He should not be able to do that
• [ ] Hide "Compare designs" card for non-logged-in users.
• [ ] Change "Use geometry editor" for non-logged-in users to demo page containing one example scenario in full editing mode