ability to run from UI
Merge branch 'master' into run

Conflicts:
	ctable/base.py
	ctable/tasks.py
	ctable/writer.py
fix progress count
fix tests
better permissions
comment total_rows
show loading image while status is pending
Merge branch 'master' into run

Conflicts:
	ctable/base.py
	ctable_view/templates/ctable/test_mapping.html
better progress counting
Merge branch 'master' into run

Conflicts:
	ctable_view/views.py
Merge pull request #11 from dimagi/run

ability to run from UI