Updated Web Templates docs #7392 plus other fixes

Improved and made fixes to several other Web docs pages.
Removing old text and ref to Gettingaconnection
Fixing indentation & max line length to 80.
Fixing indentation and formatting of WebGateway json docs
Merge pull request #246 from joshmoore/rebased/develop/web_templates_7392

Web templates 7392 (rebased onto develop)