replaced request_status_view with request_history in crons to try and prevent mysql error apparently from rsv - shown as broken in table check on live HILIS server but not on Deb7-PC - possibly due to /tmp capacity exceeded for temp table

MAJOR CHANGE: moved sql_lib() from M::Base to new M::Role::Query; moved all M::R::QueryFormatter methods into M::R::Query; removed sql_lib() from ScriptHelpers - using new M::Roles::Query method; removed lims_dbix() from M::Base - now loaded via M::Role::DBIxSimple on demand; moved get_sql_with_constraint() from M::R::DBIxSimple to M::R::Query; method gets dbh from lims_db not lims_dbix in M::LabSection::update_lab_sections() & M::Specimen::update_specimens(); added elements() to Local::QueryLibrary

moved some LIMS::Base methods out to LIMS::Role::Base; new cron mail_reports.pl - shares some methods from LIMS; exempted http requests to Chart methods from authentication to allow mail_reports.pl script to generate charts