Updates seed.rb with more sample accounts
Adds flash messages
Adds logout link
Adds more seed user accounts
Redirects logged in users to main page as oppose to staying in login page
Adds email presence and uniqueness validation
Adds Charlie to seeds
Adds random password if blank
Adds password reset code and expiration time
Adds letter_opener gem to development mode
Add mailer
Got password reset working ... still need to clear code
Adds password blank validations