fixed up the ParameterCollection to work with the new ConfigurationNameSpace

This updates Dalek to work with the new `ConfigurationNameSpace` in TARDIS. In the end the parametercollections are just collections of floats. No need for strings. 

for @orbitfold. This parameter collections has columns that can be easily accessed as `parameter_collection['column1']`. the names of the columns can be found at `parameter.columns`