Add @title to form

[simonihmig]

Add a @title argument that applies aria-label to <form>, see https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/form_role#labeling_landmarks

[roneesh]

@simonihmig do we want this? if it's a <form> tag then shouldn't we not need any aria-label attrs added to it? instead we should use the form element's name attr?