OF-859: Pubsub fix; misc cleanup

This fixes a problem with a static final reference in the Node.class. It
also addresses a couple of minor issues discovered during pubsub
testing:
- PubSubPersistenceManager should return an editable collection rather
than a read-only collection for published items
- SequenceManager defaults should use a blocksize of 5 for frequently
used tables
- LocaleUtils should catch and log a MissingResourceException and return
the key in lieu of the missing value (by convention)
Merge pull request #134 from tevans/OF-859

OF-859: Pubsub fix; misc cleanup
OF-857: Improve thread pool management

Update default QTP configuration for admin console and BOSH connectors;
added new configuration property "adminConsole.serverThreads" with a
default of 2
Merge pull request #135 from tevans/OF-857

OF-857: Improve thread pool management
OF-857: Properly configure Jetty connectors

Update for earlier fix to properly construct and initialize HTTP/S
connectors using configurable resource limits.
Merge pull request #136 from tevans/OF-857

OF-857: Properly configure Jetty connectors
Fix SQL syntax error [pubsub]

Update statement for default node configuration was missing a comma
Merge pull request #137 from tevans/OF-859

OF-859: Fix SQL syntax error [pubsub]
ofmeet plugin - ready for openfire 3.10 beta release
ofmeet plugin - revert to 3 digit version numbering
Merge pull request #138 from igniterealtime/ofmeet-version-0.0.0.4

ofmeet plugin - ready for openfire 3.10 beta release