New language setting: Devanagari (for typing Hindi and Sanskrit)

- 'Experimental' Optimized Layout option is available in Settings
- Autorepeat (Press Abc button long to start repeating the latest typed character)
- Shortcuts:
     Swipe Abc button to Text area = Send text as an SMS
     Swipe Tools button to Text area = Show latest received SMS
- Night clock during charging: While showing the received SMS, double-tap to show night clock
  (darker during night hours) and double-tap to move back to show received message (Draws some
   more power so just use while charging)
- New theme ('School')
- plus minor fixes

Changes in 0.2.2:

- New button theme: School <= this is quite special!
- Repeat latest key: Press long Abc
- Shortcut Send SMS: swipe Abc to text area
- Shortcut Show SMS: swipe Tools to text area
- Night clock during charging: Double-tap rec'd SMS
- Experimental Optimized Layout option added
- Language setting: Devanagari (Hindi, Sanskrit...)


*** Note: There is a problem during starting the application after the Qt SDK updates and
the latest N9 OS upgrades. The first time after installing the GKOS app, it may hang
completely when started, and an indication will be shown on the display whether to wait
or close. Close first. Then start it second time and wait at least 30 (!) seconds for the
app to start. Do not mind the indication then. It will go away in a couple of seconds and
the application will start (this way from now on). Sorry for this but there seems to be
a mismatch between the N9 OS and the Qt SDK tool, I suppose. Hoping for a cure...