Restore course and edit course settings.

Reworking of #205 for backup / restore and other 'hidden' forms, evidence:

![2014-03-24 17_42_18-course_ moodle 26](https://f.cloud.github.com/assets/1058419/2502887/4e0f7d06-b37c-11e3-99b1-c6cdfa383929.png)

And even:

![2014-03-24 17_43_06-course_ moodle 26](https://f.cloud.github.com/assets/1058419/2502892/5cfaf00c-b37c-11e3-95b6-b87871d1cc83.png)

:)