PHPCodeSniffer helps us stick to same coding standards across MediaWiki and it's extensions. Currently `MobileFrontend` phpcs config differs from the MediaWiki one - the following sniffs are disabled:
== Google Code In
@jdlrobson will mentor this.
Runing `phpcs` without those sniffs gives 334 errors and 51 warnings.
== Plan (YMMV)
 Enable sniffs one by one and send patches fixing the problems
 As many of the sniffs are made to pass as is possible.
 If a sniff can't be made to pass for some reason, then document it as close as possible to the line disabling the sniff.
== Developer notes
CodeSniffer output: P5742