Update VE core submodule to master (2c0224d)

Authored by Esanders.


Update VE core submodule to master (2c0224d)

New changes:
68959f2 Localisation updates from https://translatewiki.net.
2c0224d [BREAKING CHANGE] Link widget refactor
f81eefa [BREAKING CHANGE] Rename LinkInspector to LinkAnnotationInspector

Local changes:
Adjust for link inspector refactor

Create separate widgets for internal and external link
annotations. Remove annotation specific logic from link
target input widget.

Change-Id: I054c3fe7ac9c61fbc3302471abd58cab89fed5a4