Fields for dpd/reprocessing request
Adding form field for transmitting slices parameters
Fix step adding
DPD LIST replacement interface
Add prodsys2 dataset to search
Merge branch 'dpd_request' into devel

Conflicts:
	atlas/prodtask/request_views.py
find dataset from prodsys2
fix for dataset search
minor changes
minor changes
fix forms for mc
Merge remote-tracking branch 'origin/devel' into devel
Merge branch 'sbelov_sso-voms-v2' into devel
DEFT API client (to be replaced with subtree import)
Added settings for DEFT API access
Fixed nickname/dn  pairs comparison
Add Validation group
Code refactored.
Fixed tasks management with DEFT API.