Added kernel_stride and documentation for conv_rectifier mlp.
Update mlp.py

Fixed the border_value comment.
Output space was being computed incorrectly.
Fixed the include_prob comment.
Add batch_size functionality to spaces + test.
Merge pull request #336 from dwf/spaces_batch_size

Add batch_size functionality to spaces + test.
Merge pull request #335 from caglar/conv_rect_stride

Added kernel_stride and documentation for conv_rectifier mlp.
Merge remote-tracking branch 'upstream/master'
made timing monitoring more generic
take into account callbacks=None
fixed problems with monitor_time