Upgrade KoBoCat to Python3 and Django 2

[noliveleger]

Step 0 - #677

• Remove edit/delete/update features from old django view.
• Remove obsolete django views.
• Reviewed

Tests pass, current container still runs

Step 1 - #678

• Upgrade to Python 3
• Upgrade to Django 1.11
• Reviewed

Tests do not pass, current container does not run

Step 2 - #679

• Bulk remove __future__ imports
• Reviewed

Tests do not pass, current container does not run

Step 3 - #680

• Bulk remove redundant object inheritance
• Reviewed

Tests do not pass, current container does not run

Step 4 - #682

• Upgrade to Django 2.2
• Reviewed

Tests pass, current container does not run

Step 5 - #681

• Use new image (same as KPI, Python 3.8&NodeJs 10)
• Use non-root user to start container
• Reviewed

Tests pass, new container runs

Step 6 - #683

• Refactor settings files
• Use sentry new client
• Reviewed

Tests pass, new container runs

Closes #397, closes #399

[noliveleger]

Notes

Since commit 3c0e17d0b6041ae96b06c3ef4d2f78a2d0739cbc, pyxform.survey's name is changed to id_string (instead using filename)
So nodes ref in the generated xml by pyxform look like /{id_string}/a/b.

To be compliant with this behaviour, uuid in xml now uses this pattern too.

XForm clone endpoint has been removed.

public endpoints have been removed:

• /api/v1/forms/public
• /api/v1/data/public

[Kalyan-Lama]

Checked and ensured the following:

Download data

• Download data (XLS)
• Download data (CSV)
  While downloading i am seeing {} under _validation_status (please see image below)
  
• Download data (ZIP)
• Download data (KML)

Photos

• View gallery
• Download all photos

GPS Points

• Download GPS points

Additional: from KC UI

• Forms: It takes you back to the KPI dashboard
• Question Library: It takes you back to the KPI Library
• Projects: It lists out all the projects in the KC UI
• Sign out: It logs you out but you get this message (please see image below)

Additional:

(KPI UI that is linked with KC UI)

• deploying/redeploying projects in the KPI UI deploys/redeploys a project in the KC UI
• collected data synced with the KoBoToolbox server as seen in the KPI UI is also updated (synced) in the KC UI
• data when deleted in the KoBoToolbox server as seen in the KPI UI is also updated (synced) in the KC UI
• deleting project in the KPI UI deletes a project in the KC UI
• archiving/unarchiving projects in the KPI UI archivs/unarchivs a project in the KC UI
• sharing projects in the KPI UI makes the username visible in the KC UI