WIP - adding basic flat HTML templates (with rough cases):

* basic app skeleton HTML
* response HTML
* peer evaluations
* self evaluation
* grade status
* UI messages
First crack at some templates in django
Cleaning up a bit further with the templates.
Merge branch 'master' into sanchez/template-first-crack

Conflicts:
	apps/openassessment/xblock/openassessmentblock.py
	apps/openassessment/xblock/static/html/t-base.html
Merge branch 'master' into sanchez/template-first-crack

Conflicts:
	apps/openassessment/xblock/openassessmentblock.py
Updating code based on merging master.
Renamed all Evaluation to Assessment (except models). Some refactoring to begin the UI work
Missed a file in renaming evaluations
Renaming everything with an appended _block, and some cleanup
Fixing javascript to mock out workflow
Changing to mixins
Some tuning for peer
Quick code review changes to clean up empty files and move functions
Renaming render() to render_assessment() to avoid collision
Merge branch 'master' into sanchez/template-first-crack

Conflicts:
	apps/openassessment/peer/api.py
	apps/openassessment/xblock/openassessmentblock.py
	apps/openassessment/xblock/static/html/oa_rubric.html
	apps/openassessment/xblock/static/js/src/oa_submission.js
Merge pull request #38 from edx/sanchez/template-first-crack

WIP: UI Architecture for Module UI Components