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Addresses part of #1074 but does not resolve it.
Also includes material relevant to #911.

http://jenkins.buttonweavers.com:8080/job/buttonmen-AdmiralJota/196/

Dependent on #1079.

@cgolubi1 This pull definitely merits special attention. It has us linking to URL's specified by an untrusted user. I didn't do anything to blacklist where the links are going, since I figured that our focus was just on preventing anything malicious being done on our site. In theory, ```Env.sanitizeUrl"``` *should* turn malicious attempts to execute code into harmless invalid URL's. What do you think -- does it seem adequate to you?