added monostable key

+ updated version number to 1.3.0
+ added defaultlocale (without that entry Opera will fail to display any
text if no supported language is present in Opera's settings)
added monostable key

+ added icon for options page's tab
+ updated version to 1.3.0
+ updated copyright
+ changed == into === (non-converting comparison)
added monostable key
touchscroller 1.3.0 beta1
version updated to beta 2
don't send widget.preferences

+ replace all == by ===
touchscroller 1.3.0 beta 2
bistable key (double press monostable) #1
touchscroller 1.3.0 beta 3
Merge pull request #8 from Christoph142/master

added hotkey to switch modes (issue #1)