[ticket/12120] Remove EXreaction from active authors

PHPBB3-12120
Merge pull request #3051 from nickvergessen/ticket/12120

[ticket/12120] Remove EXreaction from active authors
Merge branch 'develop-olympus' into develop-ascraeus

Conflicts:
	phpBB/docs/AUTHORS
Merge branch 'develop-ascraeus' into develop