redhen 7.x-1.0-alpha3

Changes since 7.x-1.0-alpha2:

• Ensure that RedHen connections can only be between contacts and organizations and add relevant messaging. Resolves #1693446.
• Updated RedHen relations README.
• Removed lingering variable by reference errors. Ref #1666138,
• Fixing array to string conversion warning in field themeing.
• #1679786 by nedjo: Add RedHen to admin menu.
• #1679878 by nedjo: add local action links for adding contacts and organizations.
• Ensuring uid condition should be set in RedHenContactEntityController::buildQuery().
• Adding author and created to single note view
• Delete engagement when a parent contact is deleted.
• #1687778: Delete note when a parent entity is deleted.
• Fix access check on notes
• Remove lingering pass by reference error.
• Update the listing of connections to handle orgs that do not relate to contacts, E.g., orgs to other orgs.
• Allow for relation types other than our redhen_affiliation and redhen_connection on contacts and orgs.
• Change redhen_affiliation relation type to be directional.
• Improvements to reverse label handling and handle the case of an entity not having any valid relation types.
• Remove dev version of relation module as it's causing issues in different use cases. The fact that relation_ui is also required will hopefully be a enough of a warning for now.
• Fix broken path in message for no contact types.