Here is working demo:
https://gist.github.com/gridphp/5d28db588551e86216d64d794d3dc5d4
Line 32,86

Is it also possible to disable double click for row editing mantaining double click to open detail grid?

Simply set: rowactions => false

$g->set_actions(array(
"add"=>false, // allow/disallow add
"edit"=>true, // allow/disallow edit
"delete"=>true, // allow/disallow delete
"rowactions"=>false, // show/hide row wise edit/del/save option <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
"autofilter" => true, // show/hide autofilter for search
"export" => true, // show/hide autofilter for search
"search" => "advance" // show single/multi field search condition (e.g. simple or advance)
)
);