Site: Add documentation for tech notes 1-5.
Merge branch 'master' of github.com:DataTables/DataTablesSrc
Merge branch 'master' of github.com:DataTables/DataTablesSrc
Dev fix: Adding _fnCalculateEnd as a stub to the oApi object for
plug-ins

- A lot of plug-ins use _fnCalculateEnd and although all that is needed
  in the upgrade is to remove it, since the value is calculated
  automatically now, it will likely cause confusion and hassle. So I've
  added this stub to prevent those errors.
Dev: Trivial fix to use local variable for aoColumns
Site: Update for orthogonal data manual page

- Added new orthogonal data example
- Updated columns.data and columns.render documentation
- Reordering the manual a little
- Add note to the old orthogonal data blog post to direct people to the
  new manual page
Site: Disable comments on manual index page
Merge branch 'master' of github.com:DataTables/DataTablesSrc