HRD Phase 3 - Minor fixes and issues

tag fields for cases (Violation and Case Sub Type) need to reveal whole list of available options when cursor gets into the field
migration script should transfer content of custom fields: Languages spoken, Human Rights Defender Type, Irish visa status, Transit visa status, Type of the room, FL Card Language from old database to the new one see also HRD Phase 3 - Field Mapping - taken care of the upgrade process
tag required when adding contact is dropped
HRD specific tabs order is dropped
encounter_medium entries missing for 6, 7 (civicrm_option_value table) while we have entries for them in activity_tag2_id which needs to be migrated to medium_id - cleared, details on HRD Phase 3 - Field Mapping
ignore activity_tag_1 entries with value 0 when migrating to activity_type_id (keep it as is) cleared, details on HRD Phase 3 - Field Mapping