Refactor: Cleanup unused use statement and duplicate array key.
Bugfix: Don't make the Memcache service lazy because the Symfony uses an old ZF2 component for reflection that can't handle 'native' classes (like DateTime or memcache) without a corresponding source file.
Merge commit 'a4ef499794bc97f7386f45a5169bd4ba135a4330' into feature/rest-api

* commit 'a4ef499794bc97f7386f45a5169bd4ba135a4330':
  Bugfix: Don't make the Memcache service lazy because the Symfony uses an old ZF2 component for reflection that can't handle 'native' classes (like DateTime or memcache) without a corresponding source file.
  Refactor: Cleanup unused use statement and duplicate array key.