Update OOjs to v1.0.9

New changes:
9dbf1b8 EventEmitter: Improve test coverage for disconnect()
829e0c8 readme: Use HiDPI version of npm badge
7758735 Bump jscs to 0.4.1
39d37e0 Add OO#initClass method for initializing static in base classes
b5f4657 Tag v1.0.9

Change-Id: If1849a97b7de27df85cea16364eab73a7d4d612d