Added dropout and weight regularization, and summary display
Added dropout and weight regularization, and summary display


Former-commit-id: 081a253c349ea08246f065ff9f0cb2c5ef9bd181
Former-commit-id: 3b1fbf353166ff3795bd5a592e5128a58d1350f1
matt-gardner/deep_qa,matt-gardner/deep_qa,DeNeutoy/deep_qa,allenai/deep_qa,DeNeutoy/deep_qa,allenai/deep_qa