Determine number of times to loop from existing data

[nolanpro]

Fixes#534

• If data is present for a loop control, use its length as the number of loops to render. If not, use the value set in the inspector.
• Wrap each loop iteration in a form tag to isolate radio buttons. They have the same name attribute so the browser will otherwise treat them as the same input value.

[nolanpro]

Fixes#534

• If data is present for a loop control, use its length as the number of loops to render. If not, use the value set in the inspector.
• Wrap each loop iteration in a form tag to isolate radio buttons. They have the same name attribute so the browser will otherwise treat them as the same input value.

[nolanpro]

Fixes#534

• If data is present for a loop control, use its length as the number of loops to render. If not, use the value set in the inspector.
• Wrap each loop iteration in a form tag to isolate radio buttons. They have the same name attribute so the browser will otherwise treat them as the same input value.

[nolanpro]

Fixes#534

• If data is present for a loop control, use its length as the number of loops to render. If not, use the value set in the inspector.
• Wrap each loop iteration in a form tag to isolate radio buttons. They have the same name attribute so the browser will otherwise treat them as the same input value.

[nolanpro]

Fixes#534

• If data is present for a loop control, use its length as the number of loops to render. If not, use the value set in the inspector.
• Wrap each loop iteration in a form tag to isolate radio buttons. They have the same name attribute so the browser will otherwise treat them as the same input value.

[nolanpro]

Fixes#534

• If data is present for a loop control, use its length as the number of loops to render. If not, use the value set in the inspector.
• Wrap each loop iteration in a form tag to isolate radio buttons. They have the same name attribute so the browser will otherwise treat them as the same input value.

[nolanpro]

Fixes#534

• If data is present for a loop control, use its length as the number of loops to render. If not, use the value set in the inspector.
• Wrap each loop iteration in a form tag to isolate radio buttons. They have the same name attribute so the browser will otherwise treat them as the same input value.

[nolanpro]

Fixes#534

• If data is present for a loop control, use its length as the number of loops to render. If not, use the value set in the inspector.
• Wrap each loop iteration in a form tag to isolate radio buttons. They have the same name attribute so the browser will otherwise treat them as the same input value.