Fix docs: `dt-init columns.contentPadding` had wrong formatting
Fix - docs: `dt-init searchDelay` had the wrong type documented
Fix - docs: Error in first parameter name and last parameter type for `dt-init infoCallback`
Fix - docs: `dt-init columns.createdCell` function types fixed
Fix - docs: Add note to `dt-init columns.type` saying that it is more or less useless if using server-side processing
Merge branch 'master' of github.com:DataTables/DataTablesSrc