* Moved unittest to correct location
* Removed duplicated code
* handle_split now calls refresh_index() on dirty sets
* Added use_elastic parameter to get_article_ids
Fixed wrong message after splitting
Fixed ImportError
Allow changing the value of checkboxes (boolean schemafields) with enter. Fixes #102.
Only alphabetically sort widgets. Fixes #103.
Warn when trying to save sentence coding without sentencenr.
Removed dead code
Highlight active sentence in article text. Fixes #86.
Merge branch 'release-3.3'

Conflicts:
	navigator/templates/navigator/article/split-done.html
	navigator/tests.py
	navigator/views/article.py