Fix #128 - Have to clear cache after adding a new admin
rename  Datagrid/ListCollection.php -> Admin/FieldDescriptionCollection.php
Fix method name
add View mode
Fix attributes
Fix #140 - Exception Semantical Error (list) and missing Method id (create)
Fix #142 - No validation if batch action is actually activated
Fix #143 - Query error on non standard identifier key
Add help message for form element
Fix #147 - accept empty array as value
Fix bug introduce in the last commit
Fix batch action name generation
Fixed "bad" test (id is not always a number so this did not work in every case).
Merge pull request #150 from mweimerskirch/patch-1

Fixed "bad" test (id is not always a number so this did not work in every
added translation resource (Japanese)
Merge pull request #153 from hidenorigoto/japanese-translation

add translation resource (Japanese)
Fix group toggle
Fix multiple IDs
Merge pull request #155 from mweimerskirch/patch-4

Fix multiple IDs
add filter choice type