Delegated the form disabled state and textarea focus management to JSX.
Removed jQuery code that could be handled with React

The textarea is replaced every time the DOM is rendered,
so no need to blank its contents, this led to removal of
an unnecessary jQuery object and some logic tied to it.
Moved the floater code into JSX DOM

This allowed to get rid of the feedback template require,
and instead just echo two strings of HTML directly in the
Draft_Feedback class.
Adding the uncompiled JSX source

This will allow to either modify the source and
generate JS from it, or modify the JS to implement
further enhancements.