Upload errors if talk title contains an "*"

[logankilpatrick]

See here:

[Error] Failed to load resource: the server responded with a status of 403 (Forbidden) (Multiplying monochrome images as matrices: A*B and softmax: poster_video.mp4, line 0)
[Error] [ERROR] 50:04.792 axios-http-handler - Request failed with status code 403
	error
	(anonymous function) (986-12fb255ee7aa10bb63ca.js:1:46700)
	(anonymous function) (986-12fb255ee7aa10bb63ca.js:1:47320)
	(anonymous function) (986-12fb255ee7aa10bb63ca.js:1:116583)
	promiseReactionJob
[Warning] [WARN] 50:04.794 AWSS3Provider - error uploading – Error: Request failed with status code 403 (986-12fb255ee7aa10bb63ca.js, line 1)
Error: Request failed with status code 403
[Error] S3 upload failed: – Error: Request failed with status code 403
Error: Request failed with status code 403
	(anonymous function) (upload-8a3d9818222120c59465.js:1:4232)
	promiseReactionJob
[Error] Failed to load resource: the server responded with a status of 404 () (bootstrap.bundle.min.js.map, line 0)
[Error] Failed to load resource: the server responded with a status of 404 () (bootstrap.min.css.map, line 0)