Freeseer/freeseer — pull request #533 by rton (2014-03-19 23:28:09+00:00)
Title: #523 Add New Talk button should open a popup for editing the new talk

- Add NewTalkWidget class which has its own instance of TalkDetailsWidget
- Add instance of NewTalkWidget to TalkEditorApp and display it as a modal
dialog when Add New Talk button clicked
- Add new talk to database when Add button clicked, close dialog and refresh
table view

Fixes #523