Update VE core submodule to master (8f66045)

New changes:
4463279 Update OOjs UI to v0.1.0-pre (72f047e5d8)
8f66045 Localisation updates from https://translatewiki.net.

Change-Id: I5a3898beb386bc8242960be82d4caa8324832f65
Merge "Update VE core submodule to master (8f66045)"