Add pagination for upper and lower chamber people

Pagination loading can be problematic still due to performance &
perhaps other issues. Create separate issues for bugs or
further performance improvements.

Closes #26
Fix person_id being dropped when zipcode entered

Also added better integration testing to cover more
functionality.

Closes #27
Merge branch 'master' into meeting_work

* master:
  Fix person_id being dropped when zipcode entered
  Add pagination for upper and lower chamber people