Update OOjs UI to v0.1.0-pre (8f8896196f)

New changes:
56587a8 [BREAKING CHANGE] Rename InputWidget#sanitizeValue → #cleanUpValue
4253739 Implement radio button widgets

Change-Id: If10927a4e595de9b6d0ad45182470e84f335683c
Merge "Update OOjs UI to v0.1.0-pre (8f8896196f)"