replaced several calls to L::Local::find_home() with call to config instance; removed call to L::Local::Debug from lims_config.pl, as debug() uses config instance, which uses lims_config.pl; model classes get config from config instance instead of constructor passing it in LIMS::model(); general tidy-up
new C::DataImport to handle file upload & data extraction; removed cgi/bcr_abl.cgi, transferred function to C::DataImport::bcr_abl(); added unzip() method to Local::Utils; added parse_xl_file() method to Local::Spreadsheet; updated jquery js file to 1.4.2; temp (non-functional) changes to hmrn/data/treatment.tt; bugfix C::User::_email_password()
