SelectBox value translation can be disabled

To prevent SelectBox values from being translated, we had to disable entire translator from this control and translate label and option-descript manualy. 

I propose an opposite aproach - possibility to not translate these values =)
The confusion might be cause by double negation. Rather then `$disable<sth> = FALSE`, which means "it's ok, go", bool value should start with verb, like in question (e.g. "is container generated?"). I'd suggest `$doTranslateValue`, or rather `$doTranslateOptions`, because it's called on `$options` property.

@castamir Great idea btw. We use custom select box with translations off by default on it's values.