Add edit entities help window
Merge pull request #3706 from huffman/entity-tool-help

Add edit entities help window
Revert "Worklist #20074"
Merge pull request #3707 from highfidelity/revert-3669-20074

Revert "Worklist #20074"
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels