Refactor attempt with parent app, WIP
Pass keyboardshortcuts and keydown events to children, redo focus classes and item factory WIP
Table bundle types: focus on rows
Restore Markdown bundle editing and fake saving
Add select2search mixin to worksheet details page
Merge branch 'refs/heads/feature/worksheet_list_refactor' into feature/worksheet_details_refactor

Conflicts:
	codalab/apps/web/static/css/worksheets.css
Prep for merge to worksheet_interface
Merge branch 'refs/heads/feature/worksheet_interface' into feature/worksheet_details_refactor

Conflicts:
	codalab/apps/api/routers.py
	codalab/apps/web/static/css/worksheets.css
	codalab/apps/web/static/js/worksheet/worksheet_list.js
Merge pull request #650 from codalab/feature/worksheet_details_refactor

Feature/worksheet details refactor