fix(deisctl/units): short-circuit if we don't have an image

Using `;` instead of `&&` means the command won't exit if we
don't get an image.
fix(deisctl/units): don't fail units if ExecStopPost fails
fix(controller): use build image for publishing releases
docs(store): remove not-implemented store-data
Merge pull request #2080 from carmstrong/remove_store_data

docs(store): remove not-implemented store-data
Merge pull request #2057 from bacongobbler/reference-build

fix(controller): use build image for publishing releases
Merge pull request #2079 from carmstrong/safe_stop_units

fix(deisctl/units): safe stop units; don't use `;` in units
typo(store): s/database/store/
fix(deisctl): escape $HOME in post-install script

Otherwise $HOME was evaluated at the time the installer script was
created, meaning everyone would see their unit files had been installed
to "/home/jenkins/.deis/units" instead of their actual $HOME dir.
Merge pull request #2082 from mboersma/installer-home-fix

fix(deisctl): escape $HOME in post-install script
docs(CHANGELOG): update for v0.13.0
chore(release): update version to v0.13.0