• Rename the "Select Input" button to "TOSCA function"
• Change the title of the modal launched by the above button to "Set value using TOSCA functions"
• Add a drop down list to the modal launched by the above button
  • title: "TOSCA function
  • values: "get_input". Other values to be added by later stories
  • the title of the "Input Value" box shall be set based on the selected value in the above drop down list. Where "get_input" is selected the title shall be "Input"
  • The inputs displayed shall be those of the same type as the selected component instance property 

No new functionality is introduced in this story, just re-organising existing functionality to facilitate further extension in following stories