Merge pull request #32 from tmorgner/master

PRD-4445 - fixed bordercase crash introduced earlier in PRD-4313
Merge pull request #33 from pentaho-tband/dev

[PRD-3281] Revert prior changes and replace URLEncoder
PRD-4442: FormulaPieTooltipGenerator filled the data-set wrongly and thus blocked users from printing the chart value.
PRD-4442: FormulaPieTooltipGenerator filled the data-set wrongly and thus blocked users from printing the chart value.
Merge pull request #34 from tmorgner/master

PRD-4442: FormulaPieURLGenerator and FormulaPieTooltipGenerator items invalid
Legacy-Functions should use JFreeChart 1.0.13 or weird runtime errors can occur due to incompatible changes in JFreeChart's API.
Moved NullOutputStream to libbase. This is a standard class that does not change, but is replicated multiple times in the project.
Moved GenericTransferable down to libswing, so that the datasource editors can use it too.
PRD-4451: Sequence-DataSource editor fixed.
PRD-4451: Fixed hardcoded classname
Merge pull request #35 from tmorgner/master

PRD-4451: Sequence-DataSource editor fixed.