externalized message strings to string file
moved widget package to ui package
package move of AST packages
added antler library to server project to show parse errors in server log
servlet refactoring
made serverresult serializable
made questionresult serializable
moved front-end services behind interface
moved loader and result objects to fix sonar issues
changed sonar build file
linked resources add that are required for IDE resolution of classes in library projects
fixed minor sonar issues
Merge branch 'master' of https://github.com/software-engineering-amsterdam/sea-of-ql into bartolkaruza-fb
fixed display servlet to de-serialize string instead of complex object