Adds textLabel
Makes text label optional
Adds ability to update text labels on views
Causes view to move up if it previously did not have a label but now does
Animates loading indicator back to centre if text is set to nil
Merge branch 'feature/label_view' into develop

* feature/label_view:
  Animates loading indicator back to centre if text is set to nil
  Causes view to move up if it previously did not have a label but now does
  Adds ability to update text labels on views
  Makes text label optional
  Adds textLabel