Wrong extensions in qlcplus.install

Massimo:
I think wrong file extensions for "anim1.png" and "anim2.png" were preventing to build DEB package. 

Please review if this is correct. Since I do not know anything about programming I may be wrong!!! 

PS: Another possibility is that the files "anim1.qxw" and "anim2.qxw" are missing.