[Fix bug 1000908] Fix user logout when profile gets deleted.

* Remove logout page and redirect to home instead.
[Fix bug 1025093] Fix mapbox attribution to map UI.
Merge pull request #998 from johngian/1025093-fix-attribution

[Fix bug 1025093] Fix mapbox attribution to map UI.
Merge pull request #996 from johngian/fix-delete-logout

[Fix bug 1000908] Fix user logout when profile gets deleted.
Activate a default locale on start.

Activate a locale so that jinja2 doesn't choke when running individual
tests that need translation and don't involve a web request, like when
testing emails.
Merge pull request #994 from glogiotatidis/jinja2fix

Activate a default locale on start.
[Fix bug 1031290] Fix URLs in developer's section of edit profile.
Merge pull request #1001 from johngian/fix-1031290

[Fix bug 1031290] Fix URLs in developer's section of edit profile.
[fix bug 916833] Fix centering for profile image.