This avoids that the script is executed without the extension is
installed.
This avoids than an error when class is missing
Change-Id: I064d2be5dbaa3b43c8134e19694511398decba88
Add .phpcs.xml to run codesniffer against the extension.
The entry in composer.json is already there
Change-Id: If9de7e9b1b9439dc4d5fa2ba521883d13deaa739
Add the Moment Timezone library. Add a script for managing libraries,
like in MediaWiki core.
Depends-On: I9a59a6ad01850b30327e4215f2be61b8d1c41277
Change-Id: I64bc79e7d0ccdf42b006e5a225c8aa70ea5f4e15