Fix boolean type in models/project_permission.rb
Fix boolean type in models/project_permission.rb

webstream-io/jobsworth,webstream-io/jobsworth,webstream-io/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,webstream-io/jobsworth,digitalnatives/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,xuewenfei/jobsworth,ari/jobsworth,ari/jobsworth,digitalnatives/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,ari/jobsworth,ari/jobsworth