Merge branch 'release/2.1.3'
[#162] Fix update form in RSR

Add the language field to the project update form in rsr,
templates/rsr/project/update_form.html, that was recently added in the
ProjectUpdate model.

Add help text to the language field in both forms

Add dev domain in partner sites middleware
[#164] Fix middleware for CNAME access of partner sites

Fix runtime error happening when a partner site is requested using a
CNAME domain
Update release notes for hotfix/2.1.3.1
Build the JS files
Missing JavaScript files added

Built the missing JavaScript files with the
asset package manager.
Merge branch 'hotfix/v2.1.3.1' into develop
[#180] Add rsr.utils.right_now_in_akvo()

Add right_now_in_akvo() in utils to be used for the Right now in Akvo
box on the home page and the API resource right_now_in_akvo.
[#180] Use rsr.utils.right_now_in_akvo() on RSR home page

Edit the index view to use right_now_in_akvo() for the data that
goes into the Right now in Akvo box

Edit the index.html template to use the context fields from
right_now_in_akvo()
[#180] Add RightNowInAkvoResource to the API

RightNowInAkvoResource returns the data needed for the Right now in
Akvo box on the RSR home page.
Merge branch 'develop' of github.com:akvo/akvo-rsr into develop
Merge branch 'hotfix/2.1.3.1' into develop
First draft on the cobranded banner widget

. #182
Second draft on cobranded banner widget

- Removed old commented code and made syntax
- Syntax changes to comply with PEP8
- Added support for light and dark style widget

. #182
Markup changes to PS widget

. #182
First draft on issue/181

. #181
Ported cobranded banner to use template tags

. #182
First cut on small project partner sites widget

. #185
Change host and port of HostAlias.TEST2

Since test2.akvo.org is now running on test-vm we need to reflect that
in hosts.py
[#121] Add comments to IATIPartnershipResource