Copyright year was "20014", replaced to "2014" Fixed the old github.io URL which no longer exist See https://github.com/WebGoat/WebGoat/issues/321
* Remove Guava dependency from WebGoat * Add Checkstyle to the project with very basic standards so we have a style across lessons. It does not interfere with basic Intellij formatting
Added Toast notification for unexpected errors On 401 and 403 Errors, user is redirected to login
