Added documentation on upgrading Solr. Closes WS-48.
Added documentation on upgrading Solr. Closes WS-48.

EpiDoc/EFES,EpiDoc/EFES,EpiDoc/EFES,kcl-ddh/kiln,kcl-ddh/kiln,kcl-ddh/kiln,kcl-ddh/kiln,kcl-ddh/kiln,EpiDoc/EFES,kcl-ddh/kiln,EpiDoc/EFES,EpiDoc/EFES,kcl-ddh/kiln