Deleted old config files

- With suffix "Config"
- With suffix "Configuration"
Started implementation of Spring Security

- Added Spring Security Web and Config to Gradle dependencies
- Implemented sign up view logic with JSR-303 validation and Spring
  support
- Tried to added sign in feature with Spring Security:
  -> Url-pattern with "/webapp/*" is now a problem and must be corrected
  to "/"
  -> Will change interfaces java-base config to abstract classes java-base
  config to try this correction