Added visual indicators between repeated form objects

Issue #193 discussed one specific place that the admin interface needed
a visual indicator between buttons. That same pattern repeats itself
throughout the location form, so this commit addresses all of them. In
addition, it gives a visual indicator between each element in a list of
children.
Moved visual indicators so they appear on new elements

The lines between repeated sub-forms (contacts, phone numbers, and the
like) were not appearing on new sub-forms added dynamically. This fixes
that. In addition, this fixes all tests that were broken by the button
text change from "Add a(n) X" to "Add a new X"
Fix conflicts with master and merge PR #206.

- Move %hr inside fieldset so it gets removed when deleting a set of
fields

- Add styling to keep the hr left-aligned
Merge branch 'cndreisbach-issue-193'