Add reports controller and CSV, JSON response generators to the backend
Add created_accessions_report and demo for xlsx
Add DateTime as a formatted type for the backend Endpoints - if a type is not recognised an exception is thrown (to help developers); Also split the create_time into date and time to allow for format suport in Excel for the accession report;
WIP Add base HTML renderer for reports
WIP html report generation...
Create a HTML report erb for listings and introduce an AbstractReport class for basic listing reports
Add FlyingSaucer for PDF generation; and a PDF to the report handler;