Added EmailChangedEvent (#1549)

* Added EmailChangedEvent

* Fix failing tests

Silly.

* Documented the EmailChangedEvent

* Separate messages for cancelled email event

* Added lang todos for all the languages I can't speak

I wish I could though.

* Checkstyle satisfaction

* Changed log level to info for cancelled events

src/main/java/fr/xephi/authme/data/VerificationCodeManager.java

@@ -162,7 +162,7 @@ public class VerificationCodeManager implements SettingsDependent, HasCleanup {
      *
      * @param name the name of the player to generate a code for
      */
-    public void verify(String name){
+    public void verify(String name) {
         verifiedPlayers.add(name.toLowerCase());
     }