Improve .sql file loading into the query editor:  - Allow undo of the insertion  - Update scrollbar size/position after the update  - Ensure the cursor is scrolled to
Improve .sql file loading into the query editor:
 - Allow undo of the insertion
 - Update scrollbar size/position after the update
 - Ensure the cursor is scrolled to

vieten/sequel-pro,vieten/sequel-pro,brittneybrinsfield/sequel-pro,Shooter7119/sequel-pro,prabowomurti/sequel-pro,Shooter7119/sequel-pro,brittneybrinsfield/sequel-pro,prabowomurti/sequel-pro,prabowomurti/sequel-pro,Shooter7119/sequel-pro,Shooter7119/sequel-pro,brittneybrinsfield/sequel-pro,vieten/sequel-pro,Shooter7119/sequel-pro,brittneybrinsfield/sequel-pro,prabowomurti/sequel-pro,vieten/sequel-pro,prabowomurti/sequel-pro