Merge pull request #538 from akvo/develop

2.3.6 Preparing Release Candidate for UAT Deployment and Testing
[#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
[#498] Hotfix for cutoff pins
[#233] Hotfix: Removed allow_edit field in PartnerSite admin
Merge pull request #549 from akvo/hotfix/498_pins_cutoff

Hotfix/498 pins cutoff
Merge pull request #550 from akvo/hotfix/233_allow_edit

[#233] Hotfix: Removed allow_edit field in PartnerSite admin
[refs #541] Adding Raven as a dependency in order to communicate with Sentry
#258 modified organisation name as per comment from @rumca
Merge pull request #551 from akvo/feature/258-backbutton

#258 modified organisation name as per comment from @rumca
#535 adding Sentry to Release notes
Merge pull request #552 from akvo/feature/535-releasenotes

#535 adding Sentry to Release notes
Merge pull request #553 from akvo/release/candidate

2.3.6 Release - final public launch
[#176] Reverted commit
Revert "[#176] Country and continent filters on Pages"

This reverts commit de10d9a0498e620931b01266009948680e395fb1.
#535 removing #176 info
Merge pull request #554 from akvo/hotfix/176_revert_commits

Hotfix/#176 revert commits
Merge pull request #556 from akvo/feature/535-releasenotes

#535 removing #176 from release notes