Code cleanup

ReplicationCliMain.java:
In execute() and enableReplication(), used early exit.
In disableReplication(), reverted if statement + used early exit.
Extracted methods checksForNonInteractiveMode(), printSuccessfullyEnabled(), errPrintLn(), configureServer1() configureServer2(), isAnyReplicated().
In checkSuffixesForDisableReplication(), removed areSuffixRequired parameter, duplicate of displayErrors parameter.
In getMsg(), removed sProcessed and sUnprocessed which are string versions of processed and unprocessed longs.
Renamed getMessageForReplicationServerException() into errorConfiguringReplicationServer() and moved it.
Changed "col.size()>0" to "!col.isEmpty()"
Used diamond operator.