Metacat

fix for member variables but in the request wrapper

adding war version to node response

implemented health api

use debug level for request encoding message

new class

implemented ping

added url decoding to the filter

use detected document encoding or Metacat's default encoding (UTF-8)

use UTF-8 encoding when getting bytes from the DB and converting them into a string.
http://bugzilla.ecoinformatics.org/show_bug.cgi?id=2495

only call response.getWriter() when we are about to send text/xml to the client, otherwise we end of calling both getWriter() and getOutputStream() - resulting in an illegal state.