feat: add /faq page and link from request form

app.py

@@ -377,6 +377,12 @@ def thanks(rid):
     return render_template('thanks.html', req=req)
 
 
+@app.route('/faq')
+def faq():
+    """Customer-facing frequently asked questions page."""
+    return render_template('faq.html')
+
+
 @app.route('/play/<token>')
 def play(token):
     """