ImportMotifFeatures refactoring and optimsation. Now also uses bedtools
SeqTools::filter_pwm_mappings now takes a threshold instead of a perc of max.
pwm_filter_mappings.pl Now stores threshold in DB and passes threshold to filter_pwm_mappings instead of perc of max
run_binding_site_import_pipeline.pl now catches readdir failure properly
sequencing.env now passes DB write args to run_pwm_mapping_pipeline.pl