- Added RequestContext, ReturnContext, SetRequestContextCallback, SetReturnContextCallback to engine
- Removed the custom header for the html documentation since it was broken

git-svn-id: http://svn.code.sf.net/p/angelscript/code@1929 404ce1b2-830e-0410-a2e2-b09542c77caf
Fixed the scrolling in the documentation on Android devices, without hiding the nav-tree

git-svn-id: http://svn.code.sf.net/p/angelscript/code@1930 404ce1b2-830e-0410-a2e2-b09542c77caf