Move reply form from Scala to LiveScript

And remove "static HTML" version of the form, keep Javascript/Ajax only.
Remove pointless indentation.
Break out function.
Break out saveReply() function from AppReply.handleForm()

And remove _showHtmlResultPage(), which is used for static HTML only.
Make d.i.showErrorEnableInputs() work with JSONP

Then no arguments at all are provided.
Make $.dwEnable/dwDisable work with many jQuery elems at once.
Fix new-forum-topic button broken bug

Handle the case when showLoginSubmitDialog(event.data...) is absent.