[Merge] lp:~ahayzen/content-hub/printing-trusted-export into lp:content-hub

[Andrew Hayzen]

After further testing I'm able to open two trust sessions and close one, the previous issue seems to be a glitch that was caused by bug 1659310 :-)
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https://code.launchpad.net/~ahayzen/content-hub/printing-trusted-export/+merge/314141
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