Added check for which tables are present in constructor and also
individual checks for each table with condition that if table exists
then it won't be created. This proved to resolve some of the previous
issues. But UsedIn and PresentIn are still giving us trouble.
Added text to individual database check in case of success. Samma kod
dyker upp på flera ställen, borde egentligen vara en separat metod men
det ställer till det med try-catch.