Add missing var statements, braces and semicolons. Closes #23

Conflicts:
	comparisons/ajax/json/ie8.js
	comparisons/ajax/request/ie8.js
	comparisons/elements/clone/ie8.js
	comparisons/elements/contains/ie8.js
	comparisons/elements/remove_class/ie8.js
	comparisons/elements/toggle_class/ie8.js
	comparisons/elements/toggle_class/ie9.js
	comparisons/utils/is_array/ie8.js