Fix some doc bugs found during its translation:

• Disable TOC generation in Makefile because in the original version it does not make too much sense to have a one-item TOC
• Change structure of sections, move all the sect2 to level sect1; this results shorter high-level sections, but it gives a more normal layout
• Mark up CUPS ports with <filename role="package"> to add Ports Collection links for them
• Mark up group "cups" with <groupname>
• Fix a <programlisting> within a <para> situation
• Replace <filename> tags with <ulink> for local CUPS web interface links
• Replace <literal> tags with <hostid> for "localhost"
• Mark up menu items with <quote> rather than <literal>
• Use <replaceable> elements where applicable
• Fix spelling
• Remove all verbatim quote symbols, replace them with <quote> elements
• Mark up make variables with <makevar> elements
• Mark up make targets with <maketarget> elements

Reviewed by: Chess Griffin <chess (at) chessgriffin (dot) com>