[TASK] Add cruser_id to new sysnews

If a news is created, the field cruser_id should be filled with the
uid of the cli user.
[TASK] Add total count of extensions
[BUGFIX] Add missing class to ext_autoload
[FEATURE] Add count of local installed exts
Merge pull request #16 from georgringer/master

If a news is created, the field cruser_id should be filled with the uid of the cli user.