Merge branch 'feature/SavedQueues' into develop-next

bootstrap.php

include/ajax.search.php

include/class.forms.php

include/class.queue.php

include/class.search.php

include/class.staff.php

include/class.ticket.php

include/i18n/en_US/queue.yaml

include/i18n/en_US/queue_column.yaml

include/staff/queue.inc.php

include/staff/templates/advanced-search-criteria.tmpl.php

include/staff/templates/advanced-search.tmpl.php

include/staff/templates/queue-columns.tmpl.php

include/staff/templates/queue-tickets.tmpl.php

include/staff/templates/savedqueue-settings.tmpl.php

include/upgrader/streams/core.sig

include/upgrader/streams/core/e7dfe821-70921d5c.patch.sql

scp/ajax.php

scp/js/scp.js

scp/queues.php