default url, default search, open in external browser (#794)

pkg/wconfig/defaultconfig/defaultwidgets.json

@@ -27,8 +27,7 @@
         "label": "web",
         "blockdef": {
             "meta": {
-                "view": "web",
-                "url": "https://waveterm.dev/"
+                "view": "web"
             }
         }
     },

pkg/wconfig/defaultconfig/settings.json

@@ -6,6 +6,8 @@
     "autoupdate:installonquit": true,
     "autoupdate:intervalms": 3600000,
     "editor:minimapenabled": true,
+    "web:defaulturl": "https://github.com/wavetermdev/waveterm",
+    "web:defaultsearch": "https://www.google.com/search?q={query}",
     "window:tilegapsize": 3,
     "telemetry:enabled": true
 }