Sprinke some child selectors around in MWTransclusionDialog.css

Indiscriminately styling all .oo-ui-widget elements with a
descendant selector is very evil, use a child selector instead.
The use of a descendant selector broke inline dropdowns.

Change-Id: I25c5007ef1ffab9e59c46c3b11270b8f77610327
Update VE core submodule to master (07b2eda)

New changes:
4193898 Remove mw-specific message
f14b214 tests: Prepare repository for running RuboCop after every push to Gerrit
1d81df3 Localisation updates from https://translatewiki.net.
ded6be7 Localisation updates from https://translatewiki.net.
8417636 Localisation updates from https://translatewiki.net.
881d9e5 Make link inspector not close itself in IE... again
07b2eda Recalculate toolbar size on window resize

Change-Id: I5e3becac07cb20d39026786051ca28db0b3a13ca
Merge "Update VE core submodule to master (07b2eda)"
Merge "Sprinke some child selectors around in MWTransclusionDialog.css"