Improve error message when db driver is not found

Description

http://forums.activiti.org/en/viewtopic.php?f=3&t=198&sid=5fb1a9c87eb06f43776f573ea2564ad2

The exception that has the full stack trace does not mention the original cause.

Assignee

Christian M_lder

Reporter

Tom Baeyens

Labels

None

Fix versions

Priority

Major
Configure