Links: More naming of 0x90, by request

add old mailing list links to how page

     and '5e6f4b398fd1877b8d49802fb93e3e050056b2bd'

RE: flattr: Since we force https on the internet facing site, with the http
link there was a warning from the browser about 'mixed mode content' . Using
https://api.flattr.com/button/button-static-50x60.png caused the image to
disappear if one only accepts strong ciphers in the browser
(e.g.  security.tls.version.min set to 2 in Firefox). It would look like
we were doing something wrong even though it's not us, so that's not a viable option.

Looking over https://flattr.com/terms it seems that there's no problem with our
hosting it ourselves. It's also a tiny image besides.

Now to email flattr to strengthen the crypto on their site...

The file sizes are also smaller which should help some with page load times.

(suggested in a post on zzz.i2p)

     and 'f9dc76fa088ba4807479eca1344a4c377650527f'

     and 'bf15796dfc28a68f359bb8b6c280ac299bb512d4'

Command to generate the file:
cd i2p2www/pages/site && ctags -f spectags --regex-html=/\"type_\([a-zA-Z]+\)\"/\\1/t,type/ --regex-html=/\"struct_\([a-zA-Z]+\)\"/\\1/s,struct/ -R -n docs/spec/*.html

The HtmlFormatter class from Pygments was duplicated and modified,
instead of patching upstream.

Sometimes the mtn syncs hang until aborted. Well, my syncing with welterde and
echelon would hang periodically until I added the same timeout support I'm
adding here. In short, if Montone's action has not completed within 20 minutes,
forcably kill the process. /usr/bin/timeout is a part of coreutils so most
(all?) Linux distributions should have it but I don't require timeout to exist.
If "timeout" can be found, it'll be used.

Also, set site-updater.sh to change to the directory in which the script is
located. This way one can give an absolute path in a cronjob.

Both of these changes should be low risk.

The Mailman instance at lists.i2p2.(de|i2p) was set up by Meeh and I in 2013
and is accessible via both I2P and the internet with newly set-up SSL certs.

HMAC and IV clarifications
NTCP formatting cleanups

Fix NTCP docs to add info on DH zero byte (ticket #1147 comment #3)
NTCP formatting cleanups
I2CP Session Status cleanup, add new 'refused' code