Add /devtools to Autocomplete and run gen-i18n

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/autocomplete/CommandProvider.js

@@ -105,6 +105,11 @@ const COMMANDS = [
         args: '<user-id>',
         description: _td('Stops ignoring a user, showing their messages going forward'),
     },
+    {
+        command: '/devtools',
+        args: '',
+        description: _td('Opens the Developer Tools dialog')
+    },
     // Omitting `/markdown` as it only seems to apply to OldComposer
 ];