Update VE core submodule to master (b5e2b87)

New changes:
96d0936 Mark primary buttons as progressive as well
68f184c Localisation updates from https://translatewiki.net.
b96c9dc [BREAKING CHANGE] Rename method cmpOffsetPaths to compareOffsetPaths
862f31d Convenience compareDocumentOrder method
b5e2b87 Update OOjs UI to v0.5.0

Local fixes to correct for breaking change I32608c7f in OOjs UI.

Change-Id: I64f5e2f6ccc0056bfa9eda5e65e87789b97b8ad5
Rename some things for my sanity

Change-Id: I101943fa027947e73f7f7559bd706faadad90e95