Bug 402301: Migration: UI Independent tests

* Add additional tests (server).

https://bugs.eclipse.org/bugs/show_bug.cgi?id=402301
Bug 405478 - AbstractSqlStyle binds for BigDecimal and Character

Applies patch by Marcel Schneider with some minor changes
Merge branch 'master' into master_testing
Add org.eclipse.scout.rt.testing.client.test