Merge pull request #2213 from jensscherbl/integration

Check the value of the HTML Encode setting rather than just it's existence. Fixes #2212.
Allow handling of post request's that exceed the server limit. Closes #1187
Release 2.5.2-beta.1
Various fixes as discovered with scrutinizer
Additional scrutinizer fixes
Couple more tweaks for AjaxDocumentation class
Fixed issue with accidental output