crm_core 7.x-0.952

Changes since 7.x-0.951:

• #2072727 by RoSk0, Jelle_S: Fixed Fatal error: Cannot access protected property DefaultMatchingEngine::$weight.
• Enabled revisions for activities.
• Added action to send e-mails to contacts.
• Added menu entries for contact types.
• Implemented Entity API way of initialize contact type with 'contact_name' field.
• Added replacing existing relations for contacts been deleted with new ones.
• Added merge contacts functionality.
• #1963246 by pingers: Info file and includes consistency.
• #2042441 by RoSk0, rodmaz: Update 'changed' property on save.
• Adjusting hook_disable callback
• Adding block as a dependency to avoid issue with hook_modules_installed