"Leak" should be "Otras" in Spanish

[Francisco Javier Díez]

When the GUI is in Spanish, it should say “Otras” (“otras causas”) instead of “Leak” for the noisy OR.

[Jose Andres Mota]

issue solved adding 2 literals in the xml dialogs.

commit: https://bitbucket.org/cisiad/org.openmarkov.gui/commits/e225edce2574d794c5e4d2b4571669bea2bef844