Merge pull request #29 from jexp/master

transaction and exception handling improvents
- applied changes of CDO API
Merge pull request #30 from jexp/master

changed queries to syntax that actually does node-by-id lookups and not ...
Merge remote-tracking branch 'origin/master'
- fixed TX handling in tests
- removed FQN property from field/method queries
check info-loglevel before logging
added index for FQN
removed FQN from field and method creation
alternative for store-reset queries
changed commit size for scan to 100