Fixed Dialog Insert

Noticed the Insert Dialog was actually adding the new dialog at the end.

This has been corrected. In now inserts a new Dialog after the current dialog.

This was important to me because I may need to create some Hubs to a finished project to

avoid repeating sections.

Or

To add a chapter selection at the beginning.

EDIT: Found another issue with Inserting a Dialog... Would not insert at index 0... Fixed!