Updates to API docs:
- Merged Annotation Service docs into single page
- Added docs for Layer, Legend and Tile Services
Merge branch 'api-docs-update-v2' into 0.4-doc-updates
Fixes for showing selected Chapter in API TOC
- Remove quotes from attribute keys in example requests/responses
- Replace smart quotes with straight quotes
Update example response for Annotation Tile data type to replace old bin [n,n] keys