[OE-3485] Docs fixes
Merge branch 'develop' of github.com:openeyes/OpenEyes into develop
Fix for rendering optional elements. Refs 0e5bf1a654214e15c2f3055a40d41885124adf73
Restore softDelete stub method on BaseEventTypeElement.
[OE-3485] Styleguide fixes
Merge branch 'develop' of github.com:openeyes/OpenEyes into develop