Merge pull request #323 from EverythingMe/counter-vis

Counter visualization
Add support for searching for query by id
Merge pull request #325 from EverythingMe/feature/search-by-id

Add support for searching for query by id
Fixes and imporvements to import dashboard:

- Update it to not expect query result.
- Add support for specifying data source.
- Create mapping file if it doesn't exist yet.
manage.py: list all users command
manage.py: better output for list data sources command
Merge pull request #331 from EverythingMe/fix/import

Fixes and improvements to import dashboard command:
Fix: mixed number columns was wrongly detected as integer
Merge pull request #333 from EverythingMe/fix/import

Fix: mixed number columns was wrongly detected as integer
bugfix: Counter visualization font size issues