Ensure a C-contiguous input

Both ImgActs and WeightActs require hidacts to be C-contiguous, but it is not guaranteed in code. This could lead to runtime exception.
enforce gpu_contiguous in imgacts & weightacts
Initial commit of models tutorial
log timing for saving the best model pickle
Initial commit of Theano to Pylearn2 tutorial
Delete first draft
Merge pull request #1221 from ppwwyyxx/patch-1

Ensure a C-contiguous input for ImgActs
additional modification on sandborx/rnn
Merge pull request #1225 from cancan101/log_timing_best

Log the time is takes to save the pkl file when saving a new "best"
small amount of MNIST cleanup
fixed pep-8 errors
Merge pull request #1234 from goodfeli/fix_mnist

small amount of MNIST cleanup
Minor revisions
Minor corrections
print function
Fix compilation crash on windows.
fix pep8 and invalid syntax
Merge pull request #1235 from nouiz/windows

Fix compilation crash on windows.
Fixed indentation
the new  syntax