Merge in javadoc fixes

Fixup test as required

All binaries from Tanuki Delta Pack Community Edition,
except for armhf (armv6), compiled on Raspberry Pi:
  ant 1.8.2
  javac 1.7.0_151
  gcc 4.6.3-14+rpi1

Windows binaries remain unchanged as we must recompile them ourselves
(32 bit just to change the icon; 64 bit is not provided by Tanuki)

PPC 32-bit big endian not updated, no longer supported by Tanuki

Add long methods, deprecate Date methods

Ditto MessageId and SessionId.
Fixup unit tests as required

increment the counter on the bandwidth config page by 5 instead of 10 so that it can actually match the recommendations on the /welcome

Make all the border radiuses consistent across apps. Button-like inputs get a 12px radius, text-like inputs get a 6px radius. "Professional but not prickly." nix almost all drop-shadows and most text-shadows. more 1-3 pixed tweaks to get text centered up

More minor i2cp efficiency improvements
KeyCertificate log tweak

one more TunnelId fixup

and reduce object churn and duplication
Fixup tests, javadocs, logging as required

add a little padding to the left of the text in the sidebar under Local Tunnels, set links list style to none instead of using the link image

to prevent failures on connections esp. for hidden mode

Set accurate lengths for zero-copy

as approved at today's meeting

as approved at today's meeting

Improve logging for expiration checks

WIP, to be hooked in

Periodically log if about to expire
Short delay between stop and start on restart
_tunnel is always non-null

Add support for multiple urls to MetaInfo CLI
Add comment to release torrent

Fix callback javadocs

WIP - unused for now.
Add url-list to CLI tool for testing
Add comment support to CLI tool