- Introduced user registration

- Now using Spring Boot for classloading, this way local development does not need to restart the complete server
- Fixed all kinds of dependencies on the names of the lessons necessary to keep in mind during the creation of a lesson.
- Simplied loading of resources, by adding resource mappings in MvcConfig.
- Refactored plugin loading, now only one class is left for loading the lessons.

pom.xml

@@ -171,6 +171,7 @@
     <modules>
         <module>webgoat-container</module>
         <module>webgoat-lessons</module>
+        <module>webgoat-server</module>
     </modules>
 
     <distributionManagement>