Change DB username for dev and test databases
Updated schema.rb
Combine the aircraft ident and type columns for 'total' row
Remove separate page for adding a new entry
Put an 'add new plane' link below the planes dropdown in the new entry row
Redirect back to entries index (with a flash message) after adding or editing an entry
Update tests; add flash message when deleting an entry
Fix confirmation for deleting entries
Style with Bourbon, Neat, and Bitters
Style flash messages
Add nav header
Move refills into 'refills' subdir
Use font-awesome-rails gem to get a plane icon for the logo in the navbar