Update mac.md
Update advanced-setting.md
added search popup for home page
Fixed doc page UI
added reviewing and writing docs
Update and rename functions.md to all-functions.md
Update and rename properties.md to all-properties.md
Update all-properties.md
Update and rename script.md to domains.md
Create running-a-script.md
Update and rename callback-functions.md to all-functions.md
Update and rename writing_docs.md to contributing-to-docs.md
Update contributing-to-docs.md
Update attachments.md
stubs for entity properties
first roundi of entities, added functions
Merge branch 'master' of https://github.com/highfidelity/hifi-docs into 20068
adding descriptions for entity properties
another pass, this time with isKnownID
updated EntityItemID and EntityItemProperties based on developer feedback