schema and "Speed" structure

The "Speed" structure in both the kwalify and the rnc schema is now
documented. Also a change was done here: the subelement "Pref"
previously took the values "" or "1", which is fine for the Perl
interpretation of boolean values, but not for other languages, so this
was changed to "0" and "1".
cgi: Speed Time in JSON/XML output is now correct

Previously, lost time due to penalty and trafficlights was not
reflected in the Time value. Now the code is restructured (code lines
beloning to the "model" part of display_route() are not anymore in the
"view" part of this function) and the problem is fixed.
cgihead test: larger timeout for some URLs

bbbike-snapshot.cgi and bbbike-data.cgi may be slow, especially if
there's heavy disk I/O on the system. Therefore increased timeouts for
these two URLs (from 10s to 30s).
freebsd package: 3.18 -> 3.18_1

Package is now again on ftp.FreeBSD.org, and the TODO in cgihead2.t is
not necessary anymore.
data update
allow "Br" attribute for S* category