Add/Update some Test Files + fix bugs

[alain91]

No description provided.

[alain91]

I don't understand the error with GrouppermHandlerTest redeclation because there is only one such name.

I have changed the $x variable name

but at the present time the usage of \XoopsBaseConfig implies static method call => maybe I would be necessary to modify the behaviour with a Singleton pattern ?

[alain91]

I have changed the case in filename GrouppermHandler and the travis job use the old one.

[geekwright]

Please ignore the line notes. Codacy added those -- I've changed the settings to turn those off. Sorry.

[geekwright]

There were a couple of filename case issues where there were two entries in the index with different names, but on Windows, the names would resolve to the same actual file.

Once that was cleared up, there were a couple of other little issues.

Looks good, thanks!