Update CREDITS

Update CREDITS

* Adding Ryan Kaldari, Ori Livneh and Patrick Reilly as developers
* Adding every contributor with 5+ changes merged in core as patch contributors

[ Notes ]

(1) This operation has been facilitated by a script to compare CREDIT
    entries and the Gerrit contributors base.

    Query used: status:merged project:mediawiki/core NOT owner:L10n-bot

(2) Contributors with at least one patch merged will be added later.
    If you're concerned, to speed the process, see the next note.

(3) Names sources used:
	- WMF staff & contractors list
	- Name used in Git commits
	- Name on meta. or mediawiki. user page

Change-Id: I94131a691ef9e0b5f999aba63169157d9e5b433b