Change Select Operation and include support to exclusion and regex match selection

[waltersf]

Change Select Operation and:

• New field: action type (list with items "SELECT" and "REMOVE");
• New field: criteria (list with items "LIST", "REGEX"). Must hide fields according to the selection.
• New field: regex
• Review field attributes (it will not be required anymore)
• Review attribute name suggestion
• Implement in Spark
• Implement in Scikit
• Allow to specify an alias for attributes in selection.
• Change the UI (probably new widget)