use hash key for unique name in selects with type radio given an options hash

Author: NdotHenning

app/concepts/matestack/ui/core/form/select/select.haml

@@ -58,7 +58,7 @@
         "#{model_binding}": input_key,
         "@change": "inputChanged(\"#{attr_key}\")",
         "value-type": options_type,
-        name: "#{attr_key}_#{value}",
+        name: "#{attr_key}_#{key}",
         value: key}/
         %label=value
     - if options[:options].is_a?(Array)