Updated the template of Ansible settings for Bulbasaur to reflect the…

… physical drives we have.

Added a deployment script that creates a file containing details on w…

…hat git commit was used.

Updated the "date last updated" for the deployment procedure in the R…

…EADME.

Update `django-mock-queries`

This module's `setup.py` was depending on internal Pip APIs, which have since changed.

A new release [fixes](stphivos/django-mock-queries@a1e0007)
the regression.

(cherry picked from commit 341069d)

Fix broken images left over from the removal of the old pipeline app.

Merge pull request #837 from cfe-lab/dependabot/pip/django-1.11.28

[Security] Bump django from 1.11.26 to 1.11.28

Switch Travis config to use pytest, for #747.

Add Dataset.is_uploaded field for performance reasons.

Fix a slow query in the purge command.

Closes #775.