[FIX] (pvcBaseChart#setData) NPE occurring when an null or empty data is supplied to #setData.
[FIX] (pvcDocUtil examples debug) Wasn't setting the debug level correctly.
[FIX] (NPE nodata allowNoData TranslationOper) When data was set to null and the chart allowed having no data (like the BulletChart does), a NPE would occur.
  Now, setting data to null always results in setting it to an empty array.
[FIX] (log level) Some log calls were not using the correct level method.