Further fixes for the quiz import functionality. Made a few mistakes in how this should all have been fetching the information due to trying to make things look better/more in order- and now added in the quiz_questions to the query to ensure that all questions are fetched, regardless of being answered or not. Should not normally happen, but just in case.
Merge branch 'develop' of https://github.com/EntradaProject/entrada-1x into develop

# By Josh Dillon (6) and Ryan Warner (2)
# Via Josh Dillon (4) and Ryan Warner (3)
* 'develop' of https://github.com/EntradaProject/entrada-1x:
  Minor updates, changes, and cleanup.
  Refs #392: Minor change to make api return only needed data, cleanup of commented code on edit page, minor UI changes.
  Finish functionality for attaching learning events to assessments. Refs #392
  Adds assessment form processing for the attached event, adds insert function to AssessmentEvent Model. Refs #392
  adds custom CSS for the datepciker in the add assessment interface, adds event title search functionality to asessment-event api. Refs #392
  Adds Event model, AssessmentEvent model, minor ui updates and starts the js to handle attaching a learning event to an assessment. Refs #392
  Adds AssessmentEvent model. Refs #392
  adds assessment_events table to the install sql file. Refs #392