[fix] Apply fulltextindexed change in the actual index
Change of the fulltextindexed attribute of a CWAttribute did actually change
anything for already existing entity (but apply to new one). This patch fix this
behaviour:
* A new SingleLastOperation, UpdateFTIndexOp, to reindex entity whose
ftindexation changed during a commit. This data is read from
session.transaction_data['fti_update_etypes']
* The SourceDbRDefUpdate operation to store Etype who modify they fulltextindexed
of attribute in session.transaction_data['fti_update_etypes'].
* A new test is added to check the behaviour