Move "Remove person" checkbox to the top of each person

Fixes #54
Use date_field for date of birth
Use a colection_select for marital status

Possible values are based on the US census.

Fixes #50
Consistently left-align Hedin House name fields
Use consistent label casing in the main form
Merge pull request #81 from jrunningen/master

Tweaks and fixes for main form and Hedin House PDF