Sync DS similar to changes in upstream

See cakephp/cakephp@a9de83daeb14134
Switch Vendor/croogo/croogo to master branch

Was using outdated 2.0 branch
Remove minimum-stability flag + change croogo version
Change parseExtensions to setExtensions

This change allows plugins to specify their own extensions to parse
Merge branch 'pr/14': Allow plugin to specify extensions

* pr/14:
  Change parseExtensions to setExtensions