Updated mediawiki/extensions
Project: mediawiki/extensions/DataValues  856216349b5f3c551eaa577beb1a7954aab20720

[coordinate.js] Removed GlobeCoordinate's "isValid" function

Since the GlobeCoordinate should always be valid, the constructor will throw an error
when trying to instantiate a GlobeCoordinate object with invalid values.

Change-Id: I5e57abeb937ed376c123dadf9586eafdb8ac5ebd