Effects: Adding unit tests for jQuery.Animation

Closes gh-2340

(cherry picked from commit b3b2d6c3dd)

Conflicts:
	src/effects.js

test/data/testinit.js

@@ -289,6 +289,7 @@ this.loadTests = function() {
 			"unit/effects.js",
 			"unit/offset.js",
 			"unit/dimensions.js",
+			"unit/animation.js",
 			"unit/tween.js"
 		];