Add missing parameters to Settings.ini Reference Document.

[andersd]

The Settings.ini reference document looks good but is missing a few parameters. What is missing and what documentation could is used is contained below. (Other then "query" cause I never messed with it.)

[query]
query_miss=itemquery/miss.html

[print_formats]

Sets if print format will appear in the print formats tab. The format will appear if "1" and will not appear if "0"

print_image=1
print_html=1
print_pdf=1

[html_printing]

Sets the template to use, image width and height for map when selecting the html format for printing output.

; HTML template! Yay!
html_template=./print/default_template.html
html_image_width=800
html_image_height=700

[EliL]

done in r841

[andersd]

Done as requested.