Fix space/return etc. for muttator. Unfortunatly config{base}.ignoreKeys

can't really be used for this, so we have to duplicate it for all apps.

muttator/content/config.js

@@ -126,6 +126,16 @@ const config = { //{{{
         "various.html"
         ],*/
 
+    get ignoreKeys() {
+        delete this.ignoreKeys;
+        return this.ignoreKeys = {
+            "<Return>": modes.NORMAL | modes.INSERT,
+            "<Space>": modes.NORMAL | modes.INSERT,
+            "<Up>": modes.NORMAL | modes.INSERT,
+            "<Down>": modes.NORMAL | modes.INSERT,
+        }
+    },
+
     modes: [
         ["MESSAGE", { char: "m" }],
         ["COMPOSE"]