Use (crlf-base-ef :utf-8) ef when communicating with Solr server.

Change-Id: I5d6000007b02b5895055cc8de18e2cb39936b930
Reviewed-on: https://gerrit.franz.com:9080/3209
Reviewed-by: Ahmon Dancy <dancy@franz.com>
Reviewed-by: John O'Rourke <jor@franz.com>
Tested-by: Kevin Layer <layer@franz.com>
Support long field type.

Change-Id: I3ecf037451696118c3e47d5b0550bb45336c67c9
Reviewed-on: https://gerrit.franz.com:9080/3210
Reviewed-by: Ahmon Dancy <dancy@franz.com>
Reviewed-by: John O'Rourke <jor@franz.com>
Tested-by: Kevin Layer <layer@franz.com>
Only parse response to lxml if content-type is application/xml.

Change-Id: I462d6c0e69181dda883db58c42db065534a2edad
Reviewed-on: https://gerrit.franz.com:9080/3211
Reviewed-by: Ahmon Dancy <dancy@franz.com>
Reviewed-by: John O'Rourke <jor@franz.com>
Tested-by: Kevin Layer <layer@franz.com>