Add a lint indicator that replaces Brackets lint indicator

Removes default Brackets lint status indicator.
Replaces the `errorIndicator` with this `lintIndicator`.

See #61 for more detail on the reasons for this. 
Yup, @JeffryBooher is right on. Generally you wrap arguments to `trigger` and `triggerHandler` in an array, specially to avoid data spreading the way you describe. This is good.