Fixed error in MySqlMigrator
Add java client for Server API to facilitate testing
Implemented load tester for ODK submission
Completed load tester for ODK submissions + images
Added basic automated tests for odk
Removed obsolete code
Refactorings/optimizations to reduce size of JS to acceptable levels

- Removed gwt-jackson library, code size is huge as the library inexplicably provides
  a pure-js implementation of a JSON parser.
- Moved form designer, table view, and importer into seperate async fragments
- Replaced BaseStyles enum with list of constants: GWT does not seem to prune
  unused enum values.
Merge branch 'version4' of github.com:bedatadriven/activityinfo into version4

Conflicts:
	server/src/main/java/org/activityinfo/server/endpoint/odk/FormSubmissionResource.java
	ui/app/src/main/java/org/activityinfo/ui/component/form/field/image/ImageUploadRow.java
Merge branch 'version4' of github.com:bedatadriven/activityinfo into version4
Cleaning up unit tests
Merge branch 'version4' of github.com:bedatadriven/activityinfo into version4