[tor-reports] Karsten's January 2016

[Karsten Loesing]

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Metrics
 - Fixed another glitch in estimated client numbers, caused by a
reboot during one of the updates.
 - Improved performance of clients and hidserv stats processing:
https://lists.torproject.org/pipermail/tor-dev/2016-January/010139.html
 - Refactored legacy module towards eventually removing it by
producing torperf.csv without psql and stopping to update the already
deprecated connbidirect.csv.
 - Tidied up country codes used in Metrics (#17786).
 - Made a few website tweaks to the HTML forms (#18108 and #18110).
 - Rewrote Metrics to read graph details from new file metrics.json
rather than using Java and JSP files with hard-coded contents.
 - Wrote Contributor's guide to the Metrics website available at
https://gitweb.torproject.org/metrics-web.git/tree/CONTRIB.md.
 - Investigated and fixed a bug in user number estimates using the
meek transport (#13171 and #18167).
 - Changed "FreeBSD" to "BSD" in relays-by-platform graph.
 - Added "0.2.8" to relays-by-version graph.
 - Discussed adding confidence intervals to hidden-service graphs.
 - Looked into JavaScript frameworks.

Onionoo
 - Moved discussion of tweaking fields parameter forward without
agreeing on a solution though (#17939).
 - Merged and deployed Onionoo version 3.1 which implements #16907
(stop returning a 500 Internal Server Error when the hourly updater
has not run for 6+ hours) and #18026 (remove deprecated and optional
"family" field from details documents).

CollecTor
 - Reduced disk space requirements by tweaking the script that
generates descriptor tarballs.
 - Fixed a minor bug where we didn't check the identity25519 crypto
block length before accessing it.

metrics-lib
 - Ran performance comparison of metrics-lib, Stem, and Zoossh with
results being put on the Stem page by Damian.

Metrics Team
 - Held two team meetings.
 - Wrote three proposals for students working on Metrics-related projects.
 - Helped write a funding proposal that includes Metrics-related projects.

Globe
 - Deployed new version that stops using Onionoo's "family" field.

little-t-tor
 - Started writing code for "dirreq-v3-transport" and "dirreq-v3-ip"
lines to track the number of consensus downloads of each pluggable
transport and by IP version (#8786).
 - Started writing code that removes data structures containing unique
IP address sets (#15469).
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