log tweaks

isn't treated as CLOSED and immediately replaced by i2ptunnel,
which caused dup shared clients in a race at startup
(possible related tickets #642, #650, #815, #1545)

- FloodfillMonitorJob:
  - Use avg of router.tunnelBacklog instead of current backlog
- Some language/spelling fixes

caused by calling close() from HTTPResponseOutputStream.Pusher,
but close() rendered the underlying InflaterInputStream unusable.
Broken in -15. Caused failed HTTP fetches and other flakiness.

I2P session closes (ticket #1563)

Full version is used as the su3 version.
Uses same su3 certs as release updates. Users may add additional certs
to ~/.i2p/certificates/router/ as necessary.
Copy echelon's reseed key for use as a router signer.
Unsigned update remains a separate option for now.
Various update subsystem cleanups.

where it was missing (ticket #1531)

add bandwidth classes P and X (ticket #1447)

Don't include NTCP conns established too long ago in clock skew vector
Hide unestablished outbound NTCP conns from /peers view
Add per-transport status to /peers
Put status description instead of code into event log reachability changes

- NTCP inbound skew calculation had flipped sign
- Include RTT in NTCP skew calulation
- Set SSU skew on first packet so it's right from the beginning
- Above should fix the "ignoring clock offset" error
- Javadocs
RouterClock:
- Add config to disable clock adjustment for testing
- Reduce window in skew vector for slew calculation
- Double max slew rate

broken in fix for ticket #815

 * Replace SimpleScheduler with SimpleTimer2
 * Bump version number

Remove meeh.i2p as update host (ticket #1515)
Re-add 193.xxx https reseed
Fix SocketManagerFactory property handling
Restore UPnP locale fix lost in the merge
i2ptunnel finals
I2NP unique id fixes
duplicate done() in ReseedChecker
bigger langbox in CSS
reformatting
Javadocs

Send error responses for timeout, EOF, and bad registration.
Only affects "user" mode, not webirc.
detab
move private fields to top

i2ptunnel:
- Better timeout handling when reading headers in HTTP server (improved fix for ticket #723)
  Enforce total header timeout with new readLine()
- Prep for returning specific HTTP errors to client on request timeout and header errors,
  instead of just closing socket... further work to be in i2p.i2p.zzz.test2 branch
Streaming:
- Fix read timeout on input stream - was waiting too long, often twice as long as timeout, or more
  Enforce total timeout even when notify()ed
- Fix read() returning 0 on read timeout instead of -1 (possible fix for ticket #335)
  This prevents passing partial headers to server on timeout
- Fix javadocs for read timeout to match current behavior
- Fix StandardSocket SoTimeout to account for differences with I2PSocket readTimeout
- log tweaks

broken by new state code

better error message to client
javadocs

escape and truncate URL on error page

display new error page in HTTP client (ticket #643)
javadocs