Metacat

Add SolrDoc and SolrElementField class.

added more classes to the index diagram to reflect current state of the code - needs to be updated to include plan for implementation (e.g., DocType object is not what we want). http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5884

enable plantuml generation when building the sphinx documentation. note that you do need to have graphviz installed, but hopefully that is all.

update MN registration screen shot and amend instructions that say a nodeId will be assigned during registration.
add section about generating SM for a new Member Node that has existing Metacat data.

Set mime type on images.

Set mime type.

Updated configuration documentation in admin guide for Metacat DataONE section. Changed links in configuration utility to point at the Admin guide.

edited the configuration docs, swapped in new fully-configured screen shot
http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5516

Continued authoring the description of DataONE in Metacat. More to come.

Moving Metacat Sphinx RST documentation from docs/dev to docs/user directory.