decouple: Re-add openy_features from decoupled repository.

[podarok]

Original Issue, this PR is going to fix: https://openy.atlassian.net/browse/MAINTAIN-91

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• No change to functionality. Just code move.
  

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[podarok]

retest this please

[gundevel]

Open Y Upgrade Path site check installed at http://upgrade.openy.cibox.tools/build3232/

[podarok]

retest this please

[gundevel]

Build comment file:

Check Open Y Installation Wizard at http://install.openy.cibox.tools/build3234/install.php

---

Test PASSed.
Refer to this link for build results (access rights to CI server needed):
http://openy.cibox.tools:8080/job/PR_BUILDER_COMPOSER/3234/

[gundevel]

Open Y Upgrade Path site check installed at http://upgrade.openy.cibox.tools/build3234/