Replace Gson with Jackson in build.gradle
Start adapting Json class
Adapt object mappers a little
Add todo for Json
Convert all jsonable objects to annotations from Jackson
Deal with de-serializing interfaces
Remove de-serializers obsoleted by previous commit
Update todos
Preliminary cleanup before installing jackson-module-guice
Add jackson-module-guice in build.gradle
Adapt classes for injection on deserialization
Fix comment
Try registering jackson module with guice
Replace location de-serializers
Replace JWSSignatureSerializer
Also get it to work with ArrayList<E>
Really remove TipiQuestionnaire and Measures activity
Missing Manifest update from previous commit
Missing deletion from previous commits
Two other missing deletions from previous commits