[Merge] lp:~dsmythies/installation-guide/xenial into lp:~ubuntu-core-dev/installation-guide/ubuntu

[dann frazier]

hey Doug - LGTM - though, does changing the $manual_release default have any impact on the produced manuals? I didn't see any effect comparing the .txt versions. If not, I'd suggest leaving it as-is to avoid the merge conflict.
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https://code.launchpad.net/~dsmythies/installation-guide/xenial/+merge/288212
Your team Ubuntu Core Development Team is requested to review the proposed merge of lp:~dsmythies/installation-guide/xenial into lp:~ubuntu-core-dev/installation-guide/ubuntu.