Checking if the user have repository and giving extension to the file. Also Adding Languages (ca, es)

1. If you didn't have a video in the repository, it shows you a JSON error. Now it shows you "Not files available"

2. In the older version, it takes away the format of the file. That made that the extension of moodle doesn't use the flash that it have. Now you can preview the video in the moodle page.

3. Now you also have in different languages this repository