modified calculation to load either next pagination link or pdf download link - was failing to provide link when total reports = multiples of entries_per_page (20, 40, 60, etc)
added specimen type to reports summary display; adjusted layout on reports summary pdf; amended order by requests.created_at to request_draft_report.created_at so now correctly displayed by report date
moved paginator code into own sub; separated model get_report_counts into own sub, using new count() method in Local::DB; new config item paginator.siblings; general code tidy
added authentication function using D2::Plugin::Auth::Extensible; new admin function to register new user; removed GET /login route - using auto_page()
changed user authentication from hilis4.users to hilis4.draft_report_users - automatically creates new entry in draft_report_users table if user exists in hilis.users table
