ISO mounting by default

[Andreev Sergei]

 So we would have to implement
> our own solution (or find another app to do it).

There is a plenty of alternatives on kde-apps.org: 

kfuseiso
http://www.kde-apps.org/content/show.php/kfuseiso?content=110509

MountISO
http://www.kde-apps.org/content/show.php/MountISO?content=108042

isomount-qt
http://www.kde-apps.org/content/show.php/isomount-qt?content=107105

acetoneISO
http://www.kde-apps.org/content/show.php/acetoneISO?content=77928

and others