Update OOjs UI to v0.1.0-pre (4975b8db90)

New changes:
9857035 [BREAKING CHANGE] Fix some intialize -> initialize typos
c93cd2b Use new OO#initClass method for base classes
967ea78 Switch over to grunt-banana-checker now that it's a real boy
4975b8d [BREAKING CHANGE] Death to initializeSelection

Change-Id: I3fac3f5ca25162b82f8830ee63cb4142eb7df68e
Merge "Update OOjs UI to v0.1.0-pre (4975b8db90)" into wmf/1.23wmf21