First pass of label refactor : added new Label and LabelText brix
Label refactor : second pass
Added new labelTests.html file
Renamed existing LabelGroup to ProtoLabelGroup
First pass at new LabelGroup bric
Some changes to eliminate warnings once the template has been used to create a new bric
Another pass at label refactor.  Also added LabelNumber bric.
CSS additions for refactored labels
Position adjustment
Another pass
Added getTestInfo functions so that draw() methods now take a size, scaling for positioning in LabelGroup, and LabelNumber index formatting
Merge branch 'master' into 567_label_refactor
Another refining pass
Changed LabelNumber to LabelIndex
Added unit tests for LabelIndex and fixed a redraw() bug in both LabelIndex and LabelText
Removed some blank lines
Merge branch 'master' into 567_label_refactor
Improved draw() and redraw() in both LabelIndex and LabelText, and added unit tests for LabelText
Changed config of LabelGroup to take instantiated labels
Removed Label from pearson.brix.BricTypes since it is an abstract base class