correct rst formatting.
Refer to metacat.war deployments since those are now the default. https://projects.ecoinformatics.org/ecoinfo/issues/6082
Added OAI-PMH chapter that was contributed by Duane Costa from LTER.
Moving Metacat Sphinx RST documentation from docs/dev to docs/user directory.
Added stub documents for chapters on DataONE and OAI-PMH (to be converted fromDuane's Word doc).