Beta 0.4.1
[#11]
new feature:
	- implemented autosubmit when user click on button "enter" in an element "input" = click raise a keyboard event
code refactor:
	- better performance detecting click on target element and controlling source of click (to avoid action in ISA web page)
	- deleted unused variables and controls
bug fix: 
	- ISA addon remain enabled clicking on status bar icon (active/deactive) =  fixed with new method to verify statew of variable "enabled"
Merge branch 'master' of https://github.com/rodenic/ISA-I-Speak-Again-by-ISF