Update lastUsed on NSR or first tag received

ElGamalSKM: Debug header change
ElGamalAESEngine: Minor cleanups for efficiency

Fix NextSessionKey constructor with null data
Fix handling of next keys
Fix sending OB next keys
Fix RatchetSessionTag.equals() for use in SKM
Delete OB NSR tagset when adding OB ES tagset
Log tweaks

Remove more ElG tag code from SKM

Add support for ElG-encrypted database lookups and stores from ECIES-only destinations
Add ratchet support to MessageWrapper
Application-specific timeout for MessageWrapper-generated tags
Refactor tunnel TestJob to use MessageWrapper
Add ratchet support to TestJob
TestJob cleanups

Use callback != null to specify request for ack

- Prep for prop. 154 with SingleTagSet
- Variable timeout for tagsets
- Start cleaner sooner
- Make key optional in next key block
- HTML debug output improvement
- log tweaks and javadocs

- Store callbacks and ES acks in OutboundSession
- Calls from engine to SKM for callbacks and acks
- Pass key ID and remote key back in SessionKeyAndNonce
- Implmenent multiple acks in ACK block

- Reply callback from ratchet to OCMOSJ (ES TODO)
- Store key ID in tagset (prep for next key)
- Move debug tagset ID from engine to tagset
- OCMOSJ minor cleanups

- Modify NextKey, start of support (WIP)
- Don't expect DSM reply to ECIES destinations
- Debug setting to always sent ack request

Change decay from .75 twice a day to .84 four times a day;
approx. same overall decay in a day (.5)
Parameterize decay variables for clarity
Fix multiple NPEs in ProfileOrganizer CLI
Other cleanups

Remove one-second stickiness, as OCMOSJ caching does the job better
http://zzz.i2p/topics/2454

Don't put ACK request in NS or NSR

Make reorganize() methods pkg private

divided by 3 after being read from file
Remove _isFailing field
Minor cleanup
Don't persist profiles when in vmCommSystem mode

fix typo, thx drz

Apache 2.0 and LGPLv2.1

no longer required for compatibility,
exploration option supported since 0.9.16

So that DejaVu fonts are not required in the classpath.
We set the default font to Monospaced.
All fonts are then set in SummaryRenderer.