WebSubmit: restriction for Move_Files_to_Storage
- New 'paths_and_restrictions' parameter added to WebSubmit function Move_Files_to_Storage.py in order to support file restrictions.
- Added missing import statement.
- Improved a bit Shared_function.get_dictionary_from_string() in order to support colon ":" in parsed dictionary values (useful with the "{'stamp': "file:DEMOART_RN"} syntax).