Updated legacy extension package name

(cherry picked from commit 036fdff61305f85f0d6b29d95aed743f2a0839f2)
Fix EZP-22128: Update Copyright info in extension.xml

(cherry picked from commit c94d97710d6adb48748915682b32b4761aac3b93)
Fix EZP-22128: Update to include original author again
(cherry picked from commit fc72ce4b2316ec98142b97f5ed707acb3dfecc4d)