Using <ul> inside <p> is not valid which forces the metadata extractor to ignore
the file.

This was preventing validation of the desktop file.

The wrap feature allows the display's height to be increased without limit
which causes the calculator window to exit the screen. Disabling this feature
removes such a possibility.

https://bugzilla.gnome.org/show_bug.cgi?id=707061

RETURN chars cannot be entered using the keyboard but can be entered using
the copy/paste function. This patch prevents that from happening.

https://bugzilla.gnome.org/show_bug.cgi?id=707061

https://bugzilla.gnome.org/show_bug.cgi?id=707234