thanks to Harri and Maksim and the brand-new public KJS API.
This starts the implementation of some of the API objects needed,
like App, Console, Data, Document, Field, FullScreen, Spell, Util.
Also, workaround the fact that we cannot change the read-only status for form fields.
svn path=/trunk/KDE/kdegraphics/okular/; revision=809259
