Change export xml_response to use the JSONModel::HTTP::stream instead of Net:HTTP::Get
I18n the messages for the session expired and gone exceptions
Move :store_user_session (should be first) to be the first filter run
Move selected_page from application_controller to the only controller that uses it, the users_controller
Remove unused choose_layout method from application_controller
Remove sanitize_params as we don't use any Rails based forms that previously resulted in POSTed data with '_attributes' as a suffix on the params
use unauthorised_access instead of render_403
Remove inline? renderer for accession's edit handler (no longer used)
I18n the error message when no rows have been entered in the RDE form
Change parse_tree's proc param to be a block
Disambiguate the search params builders in both the application controller and helper
Merge pull request #563 from hudmol/frontend-code-review-todos

Frontend code review bits and pieces