netpyne-105 Change widget type to "func" for mechs params

Author: aranega

webapp/components/definition/cellRules/sections/mechanisms/NetPyNEMechanism.js

@@ -37,7 +37,7 @@ export default class NetPyNEMechanism extends React.Component {
           name={name}
           model={`${tag}['${name}']`}
           label={name}
-          realType="float"
+          realType="func"
         />
       </Box>
     ));