Recognition of contributors and committers

This issue is created as the top level issue to gather the different issues relative to the recognition of the contributors and the committers.

• contributor : someone who has created an issue or a PR, or commented anything on any repository.
• committer : someone who has merged a PR.

We would like to recognize both of them. One can be a contributor on a repository and a committer on another one.

Here is a table of different type of recognitions that could be proposed and the related issues to detail it

	New Contributor	Regular contributor	New committer	Regular Committer	Remark
Definition	open or comment an issue, comment a PR	has an issue closed with a merged PR	create its first PR	has several merged PR
Identification See #62 (closed)	Found by a script or with GitHub API	email list ?	Found by a script or with GitHub API	email list ?	Where are the names stored ?
Welcome email	X See #72		X See #73		Email for new contributors and email for new committers
Release email See #42	X	X	X	X	Email to notify the new release thanks to all
CLA			X	X	Have to sign the CLA
Contributor badge(s) See #71	X	X	X	X
Committer badge(s) See #71			X	X
List name in a new release See #77 (closed)	X		X	X	In a category : new contributors in this release, new committers in this release...
List name on eclipseide web page See #34 (closed)					In a category : new contributors in this release, new committers in this release...
Offer discount or free access to some conferences				X