Function:
Executes Grovers algorithm on the specified range of qubits.
Where WR is the Walshrange-operator applied on the range specified by from and to, GS the Groverstep-operator, executed
times. Thus, Grovers algorithm searches in 
.Parameters:
| from | First qubit of the range. |
| to | Last qubit of the range. Has to be larger or equal to from. Otherwise, no operation is executed. |
| function | Specifies the values for which the oracle returns 1. Thus, these values are the values, Grovers algorithm searches for. Entering -1 indicates, that this value-field is not used. Only six values can be specified in the window. However, the implementation handles every possible oracle and can be used as suboperation of other gates. |