Rework section I1 Building People for Rails 4

* Rails 4 scaffold generator adds several
  controller tests that are pending. Adjusted
  The tutorial to take this into account.

* Heroku setup required addition of SSH keys.
Rework I2 Phone Numbers for Rails 4
Rework Contact Manager section I3 Email Addresses
a few small fixes
Merge pull request #999 from worace/contact_manager_revision

a few small fixes
add some more explicit description around passing person id to phone number form via query param
Add a note about generating links with delete method
Merge pull request #1002 from worace/contact_manager_revision

add some more explicit description around passing person id to phone num...
Merge pull request #995 from JumpstartLab/contact_manager_revision

Contact manager revision through Email Addresses