Also made the view rectangle have some minimal size (1/10th of the
screens width and height).
Increased the used font a bit.
Fixed removal of the dialog in the case of uploading to profile feed.
Also upgrade the file picker filters with the new extensions found
in the orginal file picker code of Singularity.
Also improve AIFilePicker a bit: added hasFilename() and now
deleting the statemachine automatically by default: it's no longer
needed to call deleteMe from the callback.