Icons from silk, rotated, same license as before

HTTP proxy is down (ticket #1530)

InflaterOutputStream, available since Java 6.
Removes PipedInputStream, PipedOutputStream.
Removes Pusher threads.
Remove delay workaround for truncated pages, no longer required.

            to branch 'i2p.i2p.zzz.test2' (head 0074b91cb9fe0ed875457dc0bf1989df03fa9e9a)

log tweaks

NetDb: Drop all-zero lookups and stores, add stats
SSU:
 - Fix debug logging of dumped packets
 - Drop sessions with bad clock skew, banlist peer, add stats
 - Drop sessions with corrupt DSM, banlist peer, add stats
Log tweaks

Thanks parg!

isn't destroyed and immediately replaced by i2ptunnel,
which caused dup shared clients in a race at startup;
Clarify session exception text if not open

(treat INIT as CLOSED) better fix to follow

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)

Instead of enabling exceptions when needed for custom set-ups, some users will
opt for disabling all security functions.

untested