Update beta 2.0.7

1. Allowed to created an empty intel project by leave the entry empty.
2. Allowed to import media objects from workshop template to your project
3. The function of creating media button changed. now you can directly creating media object from selected file.
4. Now you can fix the preview of more than one media in the preview window. try ctrl+E
5. The name of export file is now more easy to understand.
6. Some other small bug fix.