Allow multi-highlight in db plugin
Allow multi-highlight in db plugin

Summary: Enable highlight of multiple rows so they can be copied

Reviewed By: passy

Differential Revision: D15822749

fbshipit-source-id: 2302ddd27a57574c1eaf1f1395939c9f006ba301

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper