Changes
=== Bugfixes ===
* Rules and Ruleitems are able to evaluate null values now.
* When editing System settings and closing the dialog a "saving failed warning" even if all the data were saved successfully. This misleading warning does not apear any more.
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=== Enhancements ===
* Improved Data Caching Mechanism reduce the number of database accesses and incre the overall system performance by far
* The mechanism for adding languages to the UBIK syste was improved a lot.
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