Devel

This pull request adds the following functionality:
- Allow access to a full list of sorted run statuses to the members of a new 'analyst' group.
- All other authorised to update users should be able to move a run only 'forward' in respect of the value of the current temporal index. 
- Relevant 'on hold' statuses should always be available as a forward option. Example: If run is in analysis, 'analysis on hold' should be available for all.

Five changes to temporal index have been made to achieve this.