[Koha] Koha manual branched

[Nicole Engard]

I have branched the Koha manual so that master is now the working manual
for 3.18 and 3.16 has it's own branch (
http://git.koha-community.org/gitweb/?p=kohadocs.git;a=summary).  I believe
that the translators will have to do some work on
http://es.koha-community.org/manual/ to adjust accordingly and generate the
PDFs properly for these 2 branches.  Let me know when that's done and I'll
update the manual links on the Koha site.

Thanks
Nicole