plan b crawler

[zhouwein]

• [x] port plan B crawler from team15-Project
• [x] integrate crawler
• [x] add code to detect what crawler to use based on django model

[zhouwein]

Someone (preferably who worked on the model) needs to add the required code to get the crawl type from the django model and put it here: https://github.com/UTMediaCAT/Voyage/blob/crawler/src/article_explorer.py#L300

[yuya-iwabuchi]

Some error I found while testing: https://gist.github.com/Sunakujira1/e1478d8d2805110a392c Site: http://alhaq.org/

[zhouwein]

apt-get install libjpeg-dev

then reinstall pillow