Clarify testjson.sh output, fix json files

testjson.sh

@@ -1,3 +1,5 @@
 #!/bin/sh
-
-find themes/ -name "*.json"|grep -v invalid|xargs cat|json_verify -s
+find themes/ -name "*.json"|grep -v invalid|
+while read f; do
+  cat "$f" | json_verify 2>&1 > /dev/null | sed "1 s@\(.*error\)@\nError in $f\n\1@g"
+done

themes/icons/ascii.json

@@ -124,7 +124,7 @@
 		"new": { "prefix": "[n]" },
 		"modified": { "prefix": "[m]" },
 		"deleted": { "prefix": "[d]" }
-	}
+	},
     "dunst": {
         "muted": { "prefix": "dunst(muted)"},
         "unmuted": { "prefix": "dunst" }

themes/icons/ionicons.json

@@ -158,7 +158,7 @@
   },
   "taskwarrior": {
       "prefix": "\uf454"
-  }
+  },
   "dunst": {
         "muted": { "prefix": "\uf39a"},
         "unmuted": { "prefix": "\uf39b" }