Merge pull request #143 from dcleao/CDF-404

[CDF-404] - CCC - Modified discrete cartesian axis band model, with different semantics and the addition of maximum size and spacing options
[CDF-404] -  CCC - Modified discrete cartesian axis band model, with different semantics and the addition of maximum size and spacing options
* Fixed JsDocs.
   Axis band properties (as well as older tooltip properties) were not available in axes that can be both discrete and continuous (like in the point charts).