Formatting
Added divider drawable
Added build method for Type to allow for building ArrayLists of Model
Added catch for if page descriptor is null in pager adapter
Added todo into app model
Fixed incorrect implementation in button list item holder
Merge branch 'feature/tidyups' into develop

* feature/tidyups:
  Fixed incorrect implementation in button list item holder
  Added todo into app model
  Added catch for if page descriptor is null in pager adapter
  Added build method for Type to allow for building ArrayLists of Model
  Added divider drawable
  Formatting