Fixed UnboundLocalError bug in execute_ipmi_command function
Added exception to catch timeout errors.
Added selector variable in get_selected_hosts function
Improved jquery selectors and implemented numbers of hosts selected in
go button.
Modified go button text
Improved jquery selectors and implemented show number of hosts selected
in go button in check_all function
Added text in go button in manage_go_button function
Improved check_all function to manage the checked and unchecked inputs
and enable and disable buttons and select options
Modified eventloop management.