Offer lecturers and moderators the option to remove tags from the cloud
As a lecturer or moderator, I would like to be able to remove unwanted tags, and do so directly in the tag cloud.
Acceptance criteria:
- I click on a tag in the cloud. As an instructor or presenter, the associated hit list is displayed to me with a "Remove tag from cloud" button.
- I click this button and am taken back to the tag cloud.
- The removed tag is no longer displayed.