- Correct ParameterType metaclass
- Add ParamDescriptorWithDefault as a Descriptor with two Proxy (one for
default)

- Rename Parameters to ParametersWardrobe
- Changed representation
- Store default values on Redis
- add freeze method
- add read_only attributes
- add not_removable attributes
- add show_table method
- add copy parameter to switch
- improve remove method to remove sets and parameters
- add docstring

- ScanDisplay and ScanSaving changed accordingly to new
ParameterWardrobe
- Minor Python3 improvements