Get ckanext-moderatededits working with CKAN 1.5+ templates

[dread]

ckanext-moderatededits requires an old and possibly development version of CKAN. It would be good to update it for later CKAN versions.

According to the README, you need CKAN from branch feature-1141-moderated-edits-ajax but the changelog suggests this branch went into version 1.4.2. So it possibly works with 1.4.2 and 1.4.3(.1). But CKAN 1.5 has revamped templates, so the genshi stream filters definitely don't work.

BTW history_ajax/read_ajax calls have been deprecated in CKAN since 1.5.2a and will need fixing up to use the Action API too as part of this.