Upgrade Celery version used from 3.1.26 to 4.1.1. The following
settings have been renamed: CELERY_ALWAYS_EAGER to
CELERY_TASK_ALWAYS_EAGER, BROKER_URL to CELERY_BROKER_URL.
Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>
Instead of inserting the path of the apps into the Python app,
the apps are now referenced by their full import path.
This app name claves with external or native Python libraries.
Example: Mayan statistics app vs. Python new statistics library.
Every app reference is now prepended with 'mayan.apps'.
Existing config.yml files need to be updated manually.
Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>
