Base template now displays login or logout depending on is_authenticated, and links back to current page when authenticated including search strings. Propose to ditch the auth version of each page and incorporate in original instead. Refs #16.
Added export function to standard CT filter template with if user.is_authenticated. Removed auth versions of templates, urls and views. Limited functionality now for a single authorisation level - need to introduce groups. Refs #16.
CT filter page functionality now depends on two variables admin.exportperms and admin.adminperms that get passed from the view. The setup of the variables is curretly a bit cluncky, but it does the job. Refs #16.