Enable color variable selector for plots.
 - Users can now choose a color variable, but we don't do anything with it.
Merge branch 'develop' into fb_plots
Merge branch 'fb_plots' into variableselector
Wire up color measure
 - We now request the data for the color measure, but we don't use it.
 - Fixed issue with variable selectors not remembering selection from
   active filter.
Enable color and shape scales on plot.
Render color variable selector in collapsed state.
Merge branch 'fb_plots' of https://github.com/LabKey/cds into fb_plots
Merge branch 'fb_plots' into antigenselector
Initial antigen variable options selection grid
- determine which sources/assays have lookup to cds.Antigens
- display grid of unique antigens for selected source
- pass selected antigens as new measure with filter/values to getData API
Render color legend in collapsed state.
 - Show details on hover of glyph.
 - Added new style for a window with a triangle on the top.
Fix hover text for scatter plots.
 - Add subject id.
 - Add color measure.
 - Add proper formatting.
Merge branch 'variableselector' into fb_plots
Analyte selection panel (split assay variable options panel)
Collapse subset measure values if from same schema, query, column
Merge branch 'fb_plots' of https://github.com/LabKey/cds into fb_plots
Merge branch 'antigenselector' into fb_plots
HTML encoding for group label and description
Add 'User Groups' as source in variable selector
- one variable 'My Saved Groups'
- allow selection of set of groups to filter getData API
- uses study.SubjectGroupMap.GroupId as the "measure"
- hide linear/log scale selection for time point and user group source
Merge branch 'usergroups' into fb_plots
Show user group definition on grid row hover