Metacat

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.

use detected XML encoding when reading/writing files
use UTF-8 as default when performing queries in the DB (assume DB is using UTF-8)
remove as many PrintWriters (uses system default character encoding only) as possible and construct OutputStreamWriters where explicit encoding can be given....

fixed a bug with trailing slashes