Update VE core submodule to master (df62df432)

Authored by Jdforrester-WMF on Oct 12 2017, 9:59 PM.

Description

Update VE core submodule to master (df62df432)

New changes:
539f1fd80 Update OOjs UI to v0.23.4
4dda3b936 Notification for DM node attached/detached
df62df432 Update OOjs UI to v0.23.5

Bug: T162761
Change-Id: Id1a159ecac246dd067b83bbe86f4b163bde83e8c

Details