Card's validity edition, Notifications and Events for KYC documents.
Fixed:

- non-ascii characters in the body make the requests fail ("empty body" returned).
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/com/mangopay/core/ApiBase.java
	src/com/mangopay/core/ApiCards.java
	src/com/mangopay/core/ApiHooks.java
	src/com/mangopay/core/FilterEvents.java
	src/com/mangopay/core/RestTool.java
	test/com/mangopay/core/ApiUsersTest.java
Code formatting