@JsonProperty without a parameter for List<Date>, Date[] and Date, will default to standard UTC (zulu) date format string
modified comments
Added @Target(Element.FIELD) to specify which annotations are meant to be used for fields, methods, classes etc.
Merge branch 'json_property_date_improvement' into tests_parcelable_and_json_property

Conflicts:
	Xtendroid/src/org/xtendroid/json/JsonProperty.xtend