ODPSH-31: layout changes and sort oder

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

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

ckanext/odsh/public/odsh.css

ckanext/odsh/templates/datarequests/base.html

ckanext/odsh/templates/datarequests/comment.html

ckanext/odsh/templates/datarequests/index.html

ckanext/odsh/templates/datarequests/show.html

...xt/odsh/templates/datarequests/snippets/comment_form.html

ckanext/odsh/templates/datarequests/snippets/comments.html

...dsh/templates/datarequests/snippets/datarequest_item.html

...dsh/templates/datarequests/snippets/datarequest_list.html

ckanext/odsh/templates/snippets/custom_search_form.html

ckanext/odsh/templates/snippets/search_form.html

ckanext/odsh/tests/test_selenium.py