Add contractor model and unit tests
Add contractors#new, #create, and #show
Add content to contractor show page
Finish contractor show page
Add functionality to choose and display regions for contractor
Add functionality to show region divs with proper color
Set up map page
Save the regions is database as array.

It is necessary to do this because I will need to seach the database by region. The challenge is that
qoutes are added when pulling the value from an input field and it is necessary to remove the quotes
and quotes to be able to convert it back to array.
Fix sort on regions in index
Fix make_array method to remove empty strings and refactor show and index to sort strings of numbers