Added maven dependencies for HBase.
Turns out the only hbase dependency needed here is the client.  Makes
sense.
Wired together the HBaseStorage provider (implemenation of which is
forthcoming), so that it may be invoked properly by the server,
including configuration at the Server level (currently via env props),
and proper opening/closing of connections.
Moved packages due to naming redundancy (server.hbase.HBase), etc
Excluded slf4j-log4j12 transitive dependency being pulled in by HBase,
since it was adding an additional SLF4J binding to the classpath
(StaticLoggerBinder.class).
Added logging to HBaseStorage.  Use the interface for member variable
Storage in HBaseAbderaProvider.
Added HBase schema initialization for Feed and Entry tables.
Settled on a schema for the store/retrieve tables in HBase.  Implemented
'update' methods of HBaseStorage.