[core-api] Update return type of transaction.getFromContext() to match expected type
[backend-jvstm-common] Update how Repository stores max counter per class
[backend-jvstm-infinispan] Implement new Repository API
Merge pull request #132 from smmf/feature/jvstm-common-review-repository-get-store-max-counter

Feature/review Repository API for max counter per class