pootle_project: Fix some template quoting abuse
pootle_project: Clean up pootle_project views
pootle_project: Use render() instead of render_to_response()
pootle_store: Move Unit cache logic to its own file
Docs: Properly highlight commands
Docs: Do not indent list
Docs: Use the right name
Added missing submission type attribute

Bulk actions performed offline were missing a value for this attribute.
We're adding it for consistency and completeness. Includes data migration
code.