Create form to submit Url to be shortened

Test passes, but manual web page visit down not.

[ticket: 63249486]
Fix bug that prevents viewing the home page

[ticket: 63249654]
Form on home page to shorten URLs to post data within a Forward

[ticket: 63249780]
Add 'pg' to Gemfile

[ticket: 63249994]
Add 'activerecord' to Gemfile

[ticket: 63250326]
Add 'rake' to Gemfile

[ticket: 63250360]
Create rake task to create a database

[ticket: 63250382]