Fix QB typo and rename row count aggregation

Fix Metric section selection

Resolves #1805

Druid driver tweaks

Druid driver 

fix issue with flex squashing on filters in safari

Fix skinny quarters bars

Resolves #1558

Fix 'unknown field' in segments listing

Fix Unicode in pulse emails

list all dashboards instead of just the users created dashboard when offering target dashes

Remove redundant code, fixing Firefox syntax error

list all dashboards instead of just the users created dashboard when offering target dashes.  fixes #1717

Fix hot-reloading

Hide QB tutorial when Sample Dataset is deleted, warn when deleting Sample Dataset

Provide full QB error details

update docs about information collection.

make a general statement about not collecting any detailed values so we don't have to repeat ourselves.

Add unit test for joins that return duplicate column names