Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  7cb043378cdb2b17ab2c27019977fcf2b3fc3eca

generateUID wasnt quite dead

Original commit Ifdb9e1b24f618d7be388ea0e50ccb6ee69d7f5ca removed
the generateUID helper, but it was used in one place to give
onscreen timestamps a unique identifier.

Change-Id: I5ba076696ebb0d1f70ab24ef04ef0c33a8813a8e