Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  eac55990f5b8bfde0b6df839e05aef464969a665

Ensure developers can use `make phplint`

See mail "[WikimediaMobile] MobileFrontend installhooks PHP_CodeSniffer"

Change-Id: I8a7a3f412320f76e79d8e97c241c52098fb80603