DOCS-2043: moving projection operators
DOCS-2043: renaming urls in tocs before files.
DOCS-2043: redirect files
DOCS-2043 redirect tweaks
DOCS-2043: aggregation redirects
DOCS-2043: moving operators
DOCS-2045: fixing target and nesting bug
DOCS-2043: fixing redirect spec
DOCS-2043 fix toc-operator-landing for agg
DOCS-2043 ref-tocs for agg
DOCS-2043 fix include statements to new locations
DOCS-2043 rename agg operator landing pages
DOCS-2043 htaccess redirects
DOCS-2043 clean up warnings due to op reorg
DOCS-2049: clarifying linux system killall use
minor: updating .gitignore
DOCS-2055: fixing w:0 image
DOCS-2054: note about add shard limitation