Merge branch 'release/0.7.1'
version nums
merging
Improving translation and displaying CBS data for visitor
Merge branch 'hotfix/0.7.2'
Fix #171 by setting is_deleted when "deleting" a question

When listing the questions, only questions with
	is_deleted=False
are displayed.

Note: as a new field is added to the BaseModel, this requires a migration for
the qa app.
merge
Fix #171 - soft delete content