Started to implement text search with elasticsearch. Added data (elasticsearch) folder to gitignore.
Alexander: Nicer design of filters and implementation of date filter with bootstrap slider.
Date range filter now goes from earliest created record to last created record. Comparison is done on days only (instead of adding a day to the end date), to prevent a bug with the change of daylight savings time.
Merge branch 'slider' of https://github.com/amarfurt/healthbank into slider