Major update! Adding SpecialFilelist.php to replace both SpecialNewimages.php and...

Major update! Adding SpecialFilelist.php to replace both SpecialNewimages.php and SpecialImagelist.php
The latter ones have been bend to load SpecialFilelist with a parameter to simulate
 the respective behaviour.
SpecialFilelist uses mostly code from SpecialNewimages, but also from SpecialImagelist. Internally, it uses a class to structure code and handle parameters
 better than its predecessors.
If somethings breaks, Newimages and Imagelist can be restored by outcommenting the new part (everything before the OBSOLETE line) and removing the OLD_ from the function name.
If Filelist turns out to work, please remove the obsolete parts in the other two files.