[#497] Cleanup GWT portal code
[#497] GWT survey entry client code cleanup
[#497] GWT code servlet classes cleanup
[#497] GWT Code cleanup removing URL mappings
[#497] GWT client code cleanup
[#497] GWT code cleanup
[#497] GWT code cleanup + TestHarnessServlet class cleanup
Merge pull request #535 from akvo/feature/497

[#497] GWT code cleanup
[#497] GWT cleanup Dto's + Config + build file
[#497] GWT code cleanup
[#497] Delete GWT ant build task
Merge pull request #536 from akvo/feature/497

[#497] GWT code cleanup
Merge branch 'develop' of github.com:akvo/akvo-flow into tests/524_clustering