Add charts based on JDBC database data series.  <http://piotr.tabor.waw.pl/2009/09/07/dbcharts-hudson-plugin-to-plot-a-db-charts> ## Change Log ##### Version 0.5.2 (Jun 29, 2013) - Added Sqlite support for string data ##### Version 0.4 (Feb 17, 2011) - Avoid exception at first startup. ##### Version 0.3 (Mar 15, 2010) - Avoid error if global config is saved with no JDBC connections. ([JENKINS-5916](https://issues.jenkins-ci.org/browse/JENKINS-5916)) ##### Version 0.2.1 (Sep 20, 2009)