decouple session/transaction from MCRSolrIndexTask

Description

-MCRSolrIndexTask takes care of all the session and transaction stuff. Use MCRTransactionableCallable instead
-there is also a problem that some indexing is executed as "gast" and not "system"

Environment

None

Assignee

Matthias Eichner

Reporter

Matthias Eichner

Labels

None

URL

None

External issue ID

None

Components

Fix versions

Priority

Medium
Configure