- Removed amcatrdf
- Removed CodedArticle
- Added CodedArticle model
- Removed update_values on Coding (only used in unittests: yet to fix)
Moved replace_codings to CodedArticle, added unittests
Allow unspecified values in replace_codings
Corrected update sql columns
Removed dead code, rewritten update_values
update_values only take ids, not Codes
Merge branch 'dev' into feature_coded_article

Conflicts:
	api/rest/viewsets/coding/coded_article.py
Added unittests for CodingJobSerializer
Fixed circular import
Merge branch 'dev' into feature_coded_article

Conflicts:
	amcat/models/article.py
	api/rest/viewsets/coding/codingjob.py
CodedArticleSerializer now based on CodedArticle model instead of Article. Adds fields headline, pagenr, date and length to it (by fetching it from Article).
Removed obsolete javascript
Added article_id to CodedArticle viewset, renamed variables in annotator.js
Annotator now supports CodedArticle
Removed debugging statements (whoops.)
Optimized queries (by creating a temporary index)