moved M::Chart::get_sql_with_constraint() and _get_search_constraints() to M::Roles::DBIxSimple for code shart between M::Chart and M::Audit; replaced C::Chart::_get_chart_title() function with __PACKAGE__constraint_title, set in M::Roles::DBIxSimple::_set_chart_constraints()}
git-svn-id: https://jti.org.uk/svn/hmds_lims/trunk@1109 4177bd82-f056-0410-812d-caef170e3fa0
