More tokens

More csrf tokens for various forms in Airtime, including the multi-part file upload.  I was able to test all of these, but for the multi-part file upload I was never able to see the library enter the list of things in media.  I believe this is an unrelated problem because it seems to happen even without my code change.  The ajax requests for multi-part file upload appear to work (from what I can see in the network manager in chrome developer), but the files not appearing bug interferers with my ability to completely verify this bug fix.
Noted.  I'll incorporate this feedback into any future work I do with CSRF tokens.