On RET, execute the command on the selected line rather than what the user typed. This saves a TAB (to expand the entry) and is more in line with the other completion commands.

Now that all the queues are correctly initialised, there's no need for that dance.

this allows cmd_push_button_new_tab to open the new tab right *after* the current one, instead that always at the end.

the reload command doesn't push the current url to the history anymore.