tweak to analysis.jsp for payload

[Tricia Williams]

Hi,

   I think that displaying the payload (if one exists) of each token in 
the analysis.jsp would be beneficial.  My simple solution was to add a 
row to the existing table, convert the Payload byte array to a String 
and simple print the results.  I opened SOLR-522 to this effect. 

   There is a PayloadHelper class in Lucene that has decode/encode 
float and int methods.  Any ideas on how Payloads might be uniformly 
decoded into something readable/debugable from the gui?  I think bytes 
to String will give enough of a clue to be helpful.

Tricia