Bug 997772 - Add default suggested sites for en-US (r=nalexander)

mobile/android/base/locales/en-US/suggestedsites/fxmarketplace.json

@@ -0,0 +1,3 @@
+{ "title": "Firefox Marketplace",
+  "url": "http://marketplace.firefox.com",
+  "bgcolor": "#0095dd" }

mobile/android/base/locales/en-US/suggestedsites/list.txt

@@ -0,0 +1,2 @@
+mozilla
+fxmarketplace

mobile/android/base/locales/en-US/suggestedsites/mozilla.json

@@ -0,0 +1,3 @@
+{ "title": "Mozilla",
+  "url": "http://mozilla.org",
+  "bgcolor": "#c13832" }