Serve QQ Plot

Closes #111

See merge request !61

Fixes #111

Dev plotopti

See merge request !60

FileResponse does not raise FileNotFoundError, only RuntimeError. Removing the try except, considering that the client prevent the url from opening as long as the task producing the plot is not completed

use namespace dependant values...yaml file

See merge request !57

Compute plot in parallel

See merge request !59

Show phenotypes while task is being computed

See merge request !56

run computation when opening the project, not when creating it.

Closes #110

See merge request !58

not just only if it is running or not

Otherwise, we would save a former version of the project, with the previous celery_id, triggering a new pipeline each time project detail view is opened

Check presence of files, and status of the encompassing task to know if computation is already running, or should be started.