Create db migration to change test_script model
(remove display settings):
  - remove display_description
  - remove display_run_status
  - remove display_marks_earned
  - remove display_input
  - remove display_expected_output
  - remove display_actual_output
Change test_script validation and documentatin to
match DB model migration
Make test script upload/options interface match
test_script model changes
Merge pull request #32 from JeremyMerkur/ATE-issue-31

Implementation for Issue-31: Remove Test Script Display Settings