small update

alt hotkeys
merge
Merge pull request #2 from igorez/develop

Users list active items
add some alt hotkeys
test
Merge pull request #3 from igorez/develop

Norb:merge
small fix
Norb:
-added preloader to user active item.
-reafactored popup.js, options.js, tools.js
-refactored sound notifications, added new sound notification