added APIs to get stream of top rated charts and stream of patterns awaiting the user's validation out
Merge branch 'feature/visualisations' of codebasehq.com:playgen/celar/datacon into feature/visualisations
popular political activity monitor can now handle less than 5 users if required
Correlated Scatter Charts.
Merge branch 'feature/angular' of codebasehq.com:playgen/celar/datacon into feature/angular
Merge branch 'feature/angular' into feature/visualisations