Updated mediawiki/extensions
Project: mediawiki/extensions/Graph  cf8f5d6f9a1f7e3a556cecba6ba1e2513d1323bd

Add empty .jshintrc and .jshintignore

.jshintrc for CI, otherwise mediawiki/core's one is used.

Change-Id: Ic37d6b8f40369ac59e8cfae8797fa680c5c588cf