PRD-4939 - Fixing the drag and drop handling in the dialog. Part 1
PRD-4939 - Fixing the drag and drop handling in the dialog.
Merge branch 'master' into PRD-4939

Conflicts:
	designer/report-designer/src/org/pentaho/reporting/designer/core/editor/crosstab/CreateCrosstabDialog.java
PRD-4939 - Fixing merge conflict
Merge pull request #453 from tmorgner/PRD-4939

PRD-4939 - Fixing the drag and drop behaviour in crosstab editor dialog.