Version bump to 0.15.0.pre
Queries can now be constructed by chosing concepts in another data source that are linked to the original query data source
Updated view_concept_values that uses the new master_resolver instead of build_conditions
Removed deprecated and legacy code
General cleanup and refactoring
Refactored retrieving values from multiple sources
More cleanup, and query concepts now automatically select a source if none exists
ReportConcepts now reference a specific source
Report Concepts are now used to retrieve values from the master resolver
Don't rely on source_joins for merging across data sources
Fixed first radio button from being properly selected
Removed references to external concept information
External data sets/ data dictionaries no longer supported
Removed more external concept code
Changed styling of console commands
Updated logic to display or hide query concept source name
Return 'unknown' if the value returned is blank
Fixed a spelling error, heterogeneous was missing an e
Unknown currently throws an error when being viewed by date variables
Updated to rails 4.0.0