Merge pull request #5 from Team-Delta/database-work

Created user model, login, and sign up
integrating bootstrap into application
removed unnecessary test files
Merge pull request #6 from Team-Delta/bootstrap_integration

integrating bootstrap into application
getting login and logout configured
Merge pull request #7 from Team-Delta/signup-login

getting login and logout configured
integrating bootstrap into login page
Merge pull request #8 from Team-Delta/beautify-login

integrating bootstrap into login page
User signin with username or email