Assessment in progress vs red lines complete status - should be different flags?

[dave-mills]

4. Filter function: If I have a project the status of which is "assessment in progress" it does not turn up in the list when filtering for "red lines complete" even though all projects with assessment in progress also have red lines complete... not sure if we need a different way of filtering this?

[dave-mills]

Should change 'status' field to be different fields, maybe a set of timestamps, e.g:

• redlines_started_at
• redlines_completed_at
• redlines_completed_at
• assessment_started_at
• assessment_completed_at