Implementación de optiones avanzadas en conf de procesos

- Se añaden los parámetros necesarios a los diferentes métodos de
la clase GenericProcesses para configurar los operadores correspondientes
a cada algoritmo.
- Creación de nuevos métodos específicos para la obtención de los operadores
de los algoritmos ya configurados.
Corrección en la creación del proceso para Subgroup Discovery

- Se introduce el parámetro rule generation para las opciones
avanzadas del operador.
Rule value truncation implementation

- New option that allow the user to truncate all double values
from Roisin Results.
Area under the curve calculation fix

- Point (1,1) is now added to calculate the area.
Roisin Rule Comparator fixed

- Comparator name changed to RoisinRuleComparator.
- Fix taking into account all TPR and FPR will be lower than 1 (and
also because they are double type).
ExampleSet preprocessed objects method implementation

- New method in preprocessing that builds a process that will return
an ExampleSet object that has been preprocessed using a given form. The
method allows the user to filter rows and select attributes.
Generic processes method declaration fix

- Non used input parameters removed.
AUC calculation fix

- prevFpr to prevTpr in rectangle area calculation.
Condition Filter operator fix

- Invert filter mode.
Example filter inverter

- New methods for example filters in Preprocessing class.
Numerical label for Ripper and Tree to Rules

- New parameter in get Ripper and get Tree to rules methods to indicate whether
the label is a numerical attribute or not.
New data transformation methods
New methods for data transformation

- to excel methods are splited in two for both xls and xlsx formats.