Windowcount

Function:

 * number windowcount(windowName)

Parameters:

 * [optional] windowName - can be name of windows we want to count; By default, when no param given, this function will count all opened containers.

Return value:

 * This function return a number of all opened containers (with given name, or if no name given, of all containers).

Description:

 * This function return a number of all opened containers (with given name, or if no name given, of all containers)