Add Commons images for BlackBerry Bold 9700 and Curve 8520

Author: Seungpyo1007

data/smartphone/blackberry/2009/bold-9700.json

@@ -1,4 +1,7 @@
 {
+  "image_url": "https://upload.wikimedia.org/wikipedia/commons/d/d0/BlackBerry_9700_white_and_black.jpg",
+  "image_license": "CC-BY-2.0",
+  "image_attribution": "bertconcepts",
   "slug": "bold-9700",
   "base_model_slug": "bold-9700",
   "name": "Bold 9700",

data/smartphone/blackberry/2009/curve-8520.json

@@ -1,4 +1,7 @@
 {
+  "image_url": "https://upload.wikimedia.org/wikipedia/commons/8/83/Bb-curve-8520%281%29.jpg",
+  "image_license": "CC-BY-SA-4.0",
+  "image_attribution": "Qc7600",
   "slug": "curve-8520",
   "base_model_slug": "curve-8520",
   "name": "Curve 8520",