Added italian translation.
Added localization.
Merge pull request #290 from cbertoldi/master

Added italian translation.
0.5.8 version bump
Remove the `storage` parameter for commands

None used it.
Add `Vim::rootWindow` for convenience
Update `command_dev`
Update `command_focus`
Update `command_focus_search`
Update `command_paste` and `command_paste_tab`
Update `command_open_tab`
Update `command_marker_yank` and `command_yank`

Conflicts:

	extension/packages/utils.coffee
Update reload commands
Update stop commands
Fix #189: Speed up scoll to top/bottom commands
Update `command_tab_prev` and `command_tab_next`
Update `command_home`
Update `command_tab_first` and `command_tab_last`
Update `command_back` and `command_forward`
Update `command_restore_tab`