Update omniauth to 1.3.1 for memory performance
OmniAuth 1.3.1 may improve memory performance (~ 70% according to intridea/omniauth!774).
Closes #2404 (closed).
OmniAuth 1.3.1 may improve memory performance (~ 70% according to intridea/omniauth!774).
Closes #2404 (closed).