chore(macAutocomplete): Sorted injected dependencies
refactor(macAutocomplete): Improved mac-autocomplete positioning
fix(macAutocomplete): Clear inline style on hide
feature(macAutocomplete, macTagAutocomplete): Allow angular expression in label
Allow mac-autocomplete-label to be an Angular expression so label string does not have to be top level on the object. Label string can now be nested in another object.

Fixes #169