Changed the default tab to be Prompt, not Settings
Merge pull request #514 from edx/grady/ORA-675

Changed the default tab to be Prompt, not Settings
Merge branch 'authoring' of https://github.com/edx/edx-ora2 into grady/styles

Conflicts:
	openassessment/xblock/static/js/openassessment-studio.min.js