adding editors.dart
merging in CLs; added auto-saving
More work on ObjectStore.
Add dummy test git repository.

Add dummy test for objectstore.
Add writeObjecrt method in objectstore.
Add writeTree method to objectstore.
add tracking for actions and uncaught exceptions
cleaning up todos
implement delete file
Cleanup objectstore test.
fixed change tracking issue; added tests
ace nit
Merge branch 'master' into analytics3
Merge branch 'master' into analytics3
merge master
remove resource from parent
fix for treeview
fix test
cleanup, and add a TODO: about zone investigations
bug fix to new session code