Increases character limit on most fields to 255 characters

Input field maxlength attributes are increased for most fields to 255
characters, except for phone/fax number details, state abbreviation,
zip code, and 200 character limit short description.
Merge latest changes and update specs and spans for maxlengths
Merge pull request #52 from codeforamerica/char-limit

Increases character limit on most fields to 255 characters