-getusr
template: ster?clnt=<name|pass>&com=getusr&usr=<usr>&str=<str_pattern>[&num=
          <num_pattern>&srt=<order_pattern>]
          Order of query params is not important. Query params 'num',
          and 'srt' are optional. If ommited, 'num' defaults to '*',
          and 'srt' defaults to 'desc'.
pattern : for stereotypes, * | name.
          For num, * | <integer>.
          For srt, asc | desc. For 10->1 use 'desc'.
descript: for the specified user, the stereotypes matching the pattern
          are found and sorted according to degree (based on 'srt'),
          and secondarily according to stereotype name (asc, A->Z).
          Then the first <num_pattern> rows are selected (or all, if
          <num_pattern> is '*') and an XML answer is formed. If no
          stereotype in DB matches the pattern or if <num_pattern> <=0
          or if the user does not exist, the result will not have any
          'row' elements (200 OK will still be returned).
          Note that 'srt' affects the sorting on degree. Sorting is
          primarily based on numeric values (doubles) of field
          'su_degree', which may also contain NULLs in some records.
          Note that in case a number of stereotypes matching the pattern
          have the same degree, some of them may be part of the
          results, while others not. This depends on 'num', which
          determines in absolute terms the number of result rows.
          Which of the stereotypes with the same value will be part of
          the result depends on the stereotype name, which is a
          secondary field of ordering.
example : ster?clnt=name|pass&com=getusr&usr=eddie&str=*&num=3
          ster?clnt=name|pass&com=getusr&usr=w18&str=visitor
returns : 200 OK, 401 (fail, request error), 501 (fail, server error)
200 OK  : in this case the response body is as follows
          <?xml version="1.0"?>
          <?xml-stylesheet type="text/xsl" href="/resp_xsl/stereot_singleuser.xsl"?>
          <result>
              <row><str>stereotype</str><deg>degree</deg></row>
              ...
          </result>
comments: the reference to the xsl file allows to view results
          in a web browser. In case the response body is handled
          directly by an application and not by a browser, this
          reference to xsl can be ignored.