Add bootstrap resources and template

- js
- css
- fonts
- Add basic template
Update gitignore file
Merge pull request #1 from mozammel/feature/bootstrap-theme

Feature/bootstrap theme
Add user entity and persistence layer

- add basic unit test also
Add spring security configuration

- add basic form based authentication
- add redirection to page based on user role
- add authentication test cases
- add resourceNotFound page for 404 error
- add uncaughtException page for exceptions