Add dockerfile for cpu version of dva caffe container. Next: - Improve interface separation between Django and DVAPQL . - improve paper & documentation

Add django celery beat for schedued tasks. 

Convert CTPN into Caffe dockerfile, and try building it automatically. CRNN analysis now works. To Do: django-celery-beat for scheduling and queue management.

Compile CRFASRNN and add PyTorch to main container instead of CAFFE c… …ontainer. To Do: django-celery-beat for scheduling and queue management.

Compile CRFASRNN and add PyTorch to main container instead of CAFFE c… …ontainer. To Do: django-celery-beat for scheduling and queue management.

Alway initialize fs before launching queues. To Do: celery-beat, add Open Images annotator.

fixed bug 

Isolated pyscenedetect via subprocess, since on some machine inspite … …of using docker and travis passing the task fails (with a double free error) when cap.release() is called on the OpenCV video capture object. Running it inside a subprocess via fab ensures that in an event of error the computed frames are not lost.