#108: add blocks filter by zone
 #108: add blocks filter by container
 #108: fix accepted blocks computation
 #108: fix unit test
 #108: use container key to configure the container block
 #108: move type global condition to getAccepted/ExcludedBlocks() methods + blockcontroller phpdoc
Merge pull request #125 from MatCottet/issue108_filter_blocks_by_zone

#108: add blocks filter by zone