GWT ClassReflection: Added support for Constructors
Implemented getConstructor, getDeclaredConstructor and getConstructors in GWT's ClassReflection
Now there is also a ReflectionTest class which is run in GdxTests and in the GWT tests.
Set Type's fields, methods and constructors to empty arrays as default value.
Merge pull request #1146 from hneuer/refl

GWT ClassReflection: Added support for Constructors