Stash removals fail when spaces exist

[awithersdd]

Steps to reproduce:

1. Have a check with a space it in
2. Silence the check
3. Attempt to unsilence it

Request URL:http://10.1.2.128:8081/stashes/silence/clientname/Check%20Name_check
Request Method:DELETE
Status Code:400 Bad Request

[portertech]

Hmm, POST should validate the stash path, perhaps no spaces or special characters. I imagine URL encoding is also playing a part in this.