Firefox manifest updates

Firefox/Code/manifest.json

@@ -29,23 +29,23 @@
     "default_popup": "popup.html",
     "default_title": "Extract SQL Query",
     "default_icon": {
-      "16": "icon16.png",
-      "32": "icon32.png",
-      "48": "icon48.png",
-      "128": "icon128.png"
+      "16": "icon-16.png",
+      "32": "icon-32.png",
+      "48": "icon-48.png",
+      "128": "icon-128.png"
     }
   },
 
   "icons": {
-    "16": "icon16.png",
-    "32": "icon32.png",
-    "48": "icon48.png",
-    "128": "icon128.png"
+    "16": "icon-16.png",
+    "32": "icon-32.png",
+    "48": "icon-48.png",
+    "128": "icon-128.png"
   },
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
-      "strict_min_version": "48.0"
+      "strict_min_version": "58.0"
     }
   }
 }