Production - Display errors and enable DEBUG = False

Currently :

• Debug = false generates errors because we dont use collectstatic as we should be in prod
• We display debug error pages, which are just very dirty

To fix :

• Update nginx /static location, instead of calling /static/ in path, call /staticfiles/
• Use collectstatic in production env
• Update dev doc

-> Include collectstatic -> Launch server with --insecure flag to enable loading static in insecure environment

• Display Error
• Create template for 500 errors
• Create template for the int 10 error (below), that is recurring; Seems like somewhere its strips the links and just keeps http://agir.risefor.org/actions/action-group-detail/@ and generates invalid literal for int() with base 10: 'action-group-detail' error

V1 of error page for this

v1 of 404 page

v1 for 500 page