Updated mediawiki/extensions
Project: mediawiki/extensions/ApiSandbox  46d798d721967435d8d31f3b14ebcc1f3f6bf5e0

Add editors and other things to .gitignore

Used a copy of .gitignore of mediawiki/core and removed some lines,
because in this extension not all the folders which are in core.

Change-Id: Ib8e32c0b4a65244ea7af7b0705485c45ff1eb226