Fixed Issues in Rulex 4.1.2

Due to a limit in some SQL database distributions it was not possible to perform operations on processes exceeding 500 tasks concurrently on the stage. 

This limit has been bypassed rewriting our SQL access code.

In some particular circumstances when a string value was inserted in an if-else condition and the condition selected only one choice for all the entries, subsequent cast operations lead to incorrect results.

This situation no longer occurs.