Add more licenses, ignore 'trivial' items

assets/svg/license_info.json

@@ -499,12 +499,6 @@
       "https://www.iconpacks.net/free-icon-pack/gender-107.html"
     ]
   },
-  {
-    "path": "gender_female.svg",
-    "license": "CC0",
-    "authors": [],
-    "sources": []
-  },
   {
     "path": "gender_female.svg",
     "license": "CC0",
@@ -525,12 +519,6 @@
       "https://www.iconpacks.net/free-icon-pack/gender-107.html"
     ]
   },
-  {
-    "path": "gender_male.svg",
-    "license": "CC0",
-    "authors": [],
-    "sources": []
-  },
   {
     "path": "gender_male.svg",
     "license": "CC0",
@@ -551,12 +539,6 @@
       "https://www.iconpacks.net/free-icon-pack/gender-107.html"
     ]
   },
-  {
-    "path": "gender_trans.svg",
-    "license": "CC0",
-    "authors": [],
-    "sources": []
-  },
   {
     "path": "gender_trans.svg",
     "license": "CC0",
@@ -891,7 +873,7 @@
   },
   {
     "path": "none.svg",
-    "license": "CC0",
+    "license": "trivial",
     "authors": [],
     "sources": []
   },

assets/themes/charging_stations/license_info.json

@@ -13,8 +13,13 @@
   {
     "path": "car.svg",
     "license": "CC0",
-    "authors": [],
-    "sources": []
+    "authors": [
+      "Simon Child",
+      "The Noun Project"
+    ],
+    "sources": [
+      "https://thenounproject.com/icon/electric-car-55511/"
+    ]
   },
   {
     "path": "logo.svg",