Remove pylearn1 dependency from packaged_dependencies/theano_linear
Fix rbm/test_ais.py and remove pylearn1 dependency
Remove pylearn1 dependency from datasets/icml07
Remove pylearn1 dependency from pylearn2/pca.py

PcaOnlineEstimator was already included in pylearn2
Remove pylearn1 UTLC dependencies

* UTLC and filetensor files adopted from pylearn1, and placed into pylearn2/datasets
* Added unittests
Update comments in UTLC dataset related files
Minor fixes/typos and guard dataset related unittest with skip_if_no_data()
Let travis-ci to it's thing and observe why AIS test did not fail
Merge pull request #577 from jbornschein/pylearn1

Remove pylearn1 dependency throughout pylearn2