[#540] Added '&rel=0' to Youtube links on update page
[refs #541] Adding Raven as a dependency in order to communicate with Sentry
Merge pull request #542 from akvo/feature/541-add-sentry-configuration

[#541] Adding Raven as a dependency in order to communicate with Sentry
[#243] Removed location option for project updates
Merge pull request #552 from akvo/feature/535-releasenotes

#535 adding Sentry to Release notes
Merge branch 'master' into develop
[#558] Re-added content_owner in organisations admin
[#176] Country filtering with improved performance
Merge pull request #559 from akvo/feature/540_related_videos

[#540] Added '&rel=0' to Youtube links on update page
Merge pull request #543 from akvo/feature/243_image_position

[#243] Removed location option for project updates
[#176] Merge branch 'develop' into feature/176_filter_performance

Conflicts:
	akvo/rsr/filters.py
Merge pull request #563 from akvo/feature/176_filter_performance

[#176] Country filtering with improved performance
Merge pull request #562 from akvo/feature/558_content_owner

[#558] Re-added content_owner in organisations admin
[#522] Upgraded to Django 1.4.13 to plug recently identified security vulnerabilities.
See https://www.djangoproject.com/weblog/2014/apr/21/security/ for further details.
Merge pull request #588 from akvo/fix/522_django_security

[#522] Upgraded to Django 1.4.13 to plug recent security vulnerabilities
[#589] Add data to project_update_extra API resource

Refactor "project" field to include the full primary_location as well as
the resource_uri.

Refactor "user" field, separate "full_name" into "first_name" and
"last_name".

Refactor "organisation" field to include the full primary_location.

Add photo to fields that can be filtered on.
Merge pull request #591 from akvo/feature/589_more_project_update_extra

[#589] Code looks good
[#592] Adding release notes for 2.3.7
[#592] Updating with correct release date
Merge pull request #593 from akvo/feature/592-releasenotes

Feature/592 releasenotes - all good and correct! Great work @rumca