Settings: add dependency between softWrap and useWordWrap

there is a logical connection between softWrap and useWordWrap in Ace. In Ace when softWrap is set to 'off' useWordWrap is disabled by setting it as 'no'. 

Instead of this solution, handling a SoftWrapChanged event could be a better one, but i could not decide how to handle this in current abstraction level. So this is just "too open for discussion" style resolution.