bugfix to bcr-abl data import template where argument '' isn't numeric in subtraction if null entries; hello.tt tests for 'have_online_requests' setting

fixed errors/omissions in ngs_myeloid_screening.pl

changed method of determining timeout in _authen_config() from examination of user.designation to whether user has the do_admin function, so user can keep descriptive designation and still get admin timeout setting

amended contacts.lib; new script for NGS screening & diagnosis list