DOC-945: adding new sections and configuring links and editing existing content.
DOC-915: Removed image management content from the user guide.
Possible fix for DOC-1003: in tech review.
Fixed DOC-1003: added new NetApp configurable properties for 3.4
DOC-915: rearranging image management guide TOC to (hopefully) improve flow;
adding intro pages to group image tasks more logically;
moving shared content;
pruning, trimming, and grafting verbiage.
DOC-1009: Updating for conref path.
Adding doc history page for console guide.