Making okular the default program for tiff files?

[Albert Astals Cid]

Hi, https://bugs.kde.org/show_bug.cgi?id=219326 is a request to make Okular 
the default viewer for TIFF files based in that it seems that now the default 
TIFF viewer in KDE is kolourpaint and it doesn't support multipage tiff files.

Actually i don't have any tiff file at hand to test so i can't validate wheter 
what the user says is true or not but seems logical to me as kolourpaint has 
no concept of page at all. Also not sure if gwenview handles them or not.

Comments? Should we change it?

Albert