use filehistory to decide if javascript or blocks should be reopened
use filehistory to decide if javascript or blocks should be reopened

playi/pxt,switchinnovations/pxt,Microsoft/pxt,switch-education/pxt,playi/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt,Microsoft/pxt,playi/pxt,Microsoft/pxt,switchinnovations/pxt,switchinnovations/pxt,switch-education/pxt,switch-education/pxt,switchinnovations/pxt,switch-education/pxt,playi/pxt