OPAL-2671 ViewManager decorator was keeping a reference to the decorated datasources: ask for the decorators to release removed datasources (whether transient or not).
OPAL-2669 Concurrency error
Robustness of excel datasource (case variable row is null)
PMD fix
OPAL-2684 Allow join js method to return a value sequence (still ensure it is not a sequence of sequence)
FsGenerator added
Generator update
MAGMA-250 deleteVariableBinaryValues fixed and entities cache updated after all variables have been deleted
Empty value set collection when all variables have been removed
MAGMA-251 Make sure tokens are not null in the sql query
Merge branch 'master' of https://github.com/obiba/magma
OPAL-2684 flat option added to  method