Remove SignatureDialog from `signature.js` to put it in its own file, `signature_dialog.js`. The purpose of this change is to be able to require SignatureDialog in any other file and to separate dialog and field business. task-1878607
Remove SignatureDialog from `signature.js` to put it in its own file, `signature_dialog.js`. The purpose of this change is to be able to require SignatureDialog in any other file and to separate dialog and field business. task-1878607