When adding reviews, star ratings can be entered
Added other files for star ratings
Star ratings added to comments, review pages etc.
Added better hints for star ratings
Merge remote-tracking branch 'origin/master' into star-ratings

Conflicts:
	openreview/apps/main/forms.py
	openreview/apps/main/templates/main/add_review.html
Show and allow star ratings only if review is not comment
New structure for scrapers
Fixed tests
Generalised the Fetching and Parsing errors
Restored caching functionality
Fixed page number handling, included some tests
Fixed several minor issues
Merge pull request #52 from open-review/feature-view-more

Feature view more
Reduced size of try/except block
Merge pull request #51 from open-review/enhancement-scraper-functionality-split

Enhancement scraper functionality split
Removed obsolete setting FORCE_STATICFILES
Star rating is now required when submitting new reviews
Fixed editing reviews
Fixed redirects (redirect to review instead of frontpage after saving)
Some fixes on deleting, adding, viewing and editing reviews and comments