added user permission restrictions to resouces links; restricted resources/new_diagnoses list to users location if not lab-staff - doesn't work properly yet; changed LIMS::_debug_authen() to use LIMS::Local::Debug::DEBUG() instead of self->debug() to avoid circular ref to self in caller; added specimen description to patient summary display

modified diagnosis revisions to group by reviser & reporter

refactored date constraints templates for charts & audit/stats functions into new date_constraints.tt + form2queryparam.js files; new audit functions

new Audit controller, model & templates