PRD-4251: Caching was broken after EHCache caching was no longer broken.
Gold test: Better error message on IO errors.
Added some debug-helper property, to make it easier to debug problems related to datasources.
PRD-4252: Callable statements were not recognized when in format '{CALL procedure ()}'
Adding .gitignore file for changing files of the sampledata database.
Adding dummy file to avoid empty directories. It kills the gold sample tests
Merge branch 'sprint_2-4.0.0GA' into PRD-3857_Crosstab_repeating_header