Don't hide the entire Chart page from printing

These are a holdover in the new print styles from b0747eb, which I
believe is simply mistaken.  Instead of hiding everything, just hide the
chart properties and saved search box.  The Chart page now prints
nicely.

The form line is safe to remove as all forms are hidden from printing by
default nowadays.
Merge branch '4.0/allow-printing-of-charts' into 4.0-trunk