remove state in spark for the current git project
fix bugs
print statements
Merge pull request #754 from dart-lang/devoncarew_git_stateful

Devoncarew git stateful
Realign menu arrow with button + eliminate overlap between them
Initialize the objecstore before use.
remove todo.
fix one bug with the launch server and one with the http server; add server logging
Merge pull request #761 from ussuri/fix-menu-styling

Realign menu arrow with button + eliminate overlap between them
Merge pull request #763 from dart-lang/devoncarew_server_logging

fix one bug with the launch server and one with the http server; add ser...
Merge pull request #762 from dart-lang/debug_launch

Debug launch
move git low level code from spark.dart to scm.dart
Merge branch 'master' into devoncarew_mobile
changed _checksum(); fixed some bugs