Larry Barker 2b05d01c6c Support additional file name and path characters in media manager (#4564)
* Support additional file name and path characters in media manager

When working with abstract file names that may contain additional characters, such as quotes or ampersands, the media manager would throw an error. This PR adds two additional characters to the character whitelist.

* Add unicode filename to tests
2019-12-05 19:44:04 +11:00
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