Update VE core submodule to cf1945f60e3d1d7bc54c9ef5f90ac3ebd1f3d42b

New changes:
6fecd98 Better measurement of focusable node for context menu
9166bcd Special case for shielding of generated content wrappers
77903da Centre callout on context menu for small focusable nodes
1f8ac6d Make highlighting of context widget items less loud
48c57d3 Localisation updates from https://translatewiki.net.
a00d8ac Check language's direction rather than global direction in LanguageAnnotation description
7923e6d toLowerCase language code when searching for autonym
8eb4a71 Re-enable apply button in action dialog on close

Change-Id: I56bd961110d9fa505db1d7472caa1fd93519d284