Refactor SirTrevor.Submittable to be an object and no longer a function. Scope the input it finds by the form it's contained in. Move all onUploadStart / onUploadStop logic to the ajaxable mixin per block (so that it works with fetchable too). Stop setting the submit button in the image block.
Added new specs for Ajaxable and Submittable
Merged master and built latest