DOCS-1009 move meta files to source/about directory
DOCS-1009 changed file extensions to .txt
DOCS-1009 reorged the 'about docs' page and added links to meta docs
DOCS-1009 addition and edits to style guide
DOCS-1009 edits to the documentation organziation topic
DOCS-1009 edits to practices
DOCS-1009 edits to build and deploy page
DOCS-1009 minor
DOCS-1009 moved and renamed files
DOCS-1009 update to toc in about.txt
merge: DOCS-1009
DOCS-1104 link fixing