Fix documentation for docker installation.
Merge pull request #1132 from johngian/docs

Fix documentation for docker installation.
[fix bug 1106359] Add Mozilla Location Service to external accounts.
Merge pull request #1134 from johngian/1106359

[fix bug 1106359] Add Mozilla Location Service to external accounts.
Added an id to the group name element
Merge pull request #1136 from justinpotts/fix_1111856

Added an id to the group name element
[Fix bug 1111549] Handle race condition on user authentication.

Code based on:
https://github.com/mozilla/django-browserid/commit/357aa7933fcba7393b3b68eae721ff64dc72e2d8
Merge pull request #1133 from johngian/1111549

[Fix bug 1111549] Handle race condition on user authentication.