add mail for resource request, accept and deny actions
Minor code clean up on Action Mailer requests
updates to mailers to set email to go to the correct person. Added to the email messages
Merge master into mailer. Include borrow helper in controller.  Add method to check if user already has borrow relationship with resource before allowing them to request to borrow it
fixed picture attachment for View/Users/_form.  Add additional email msg to notify owner of request. Clean up on email messages