added original files of test task
disabled unneeded and/or transient dependencies [pom.xml]
set up creation of war-file [pom.xml]
added servlet configuration to configuration of web-application [web.xml]
added embedded tomcat plug-in for convenience of manual testing of web-application [pom.xml]
now @Value-annotation works fine at DAO [TestAppConfiguration.java (also made formatting of code)] - now login request works fine if proper login & passwords ("md5"-parameter) supplied