WinActive, decorator, WinParams, ControlParams

Fixed:
1. WinActive not worked properly.
Changed:
1. Default value for "Text" argument and property for classes WinParams
and ControlParams changed from None to ''.
2. Changed true and false detection in returned value in AutoItCall
decorator. Now all returned values that bigger than zero are interpreted
as True. Zero interpreted as False.
Additions:
1. Aded WinWaitActivePing method to wait for window active status with
timed forced activation.
2. Now window hadle is included in StringID property of WinParams class.