Merge remote-tracking branch 'origin/master'

ckanext/odsh/i18n/de/LC_MESSAGES/ckanext-odsh.mo

ckanext/odsh/i18n/de/LC_MESSAGES/ckanext-odsh.po

ckanext/odsh/plugin.py

ckanext/odsh/public/odsh.css

ckanext/odsh/public/odsh_header.css

ckanext/odsh/templates/datarequests/close.html

ckanext/odsh/templates/datarequests/comment.html

ckanext/odsh/templates/datarequests/edit.html

ckanext/odsh/templates/datarequests/new.html

...dsh/templates/datarequests/snippets/datarequest_form.html

ckanext/odsh/templates/package/search.html

ckanext/odsh/tests/test_datarequest.py

ckanext/odsh/tests/test_helpers.py