SAK-20341 Validate the length of a trigger name.

There is an 80 character limit on the DB on trigger and job names. This uses the standard JSF validator to check that we don't go over that limit. It also removes possible classcastexceptions.

git-svn-id: https://source.sakaiproject.org/svn/jobscheduler/trunk@124193 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-12908 Remove unused ddl files. 

Look in scheduler-component-shared/src/sql for the files actually used.

git-svn-id: https://source.sakaiproject.org/svn/jobscheduler/trunk@124194 66ffb92e-73f9-0310-93c1-f5514f145a0a