pass initialState variable when copying your drive in the changeUserPassword function

because the hardest problems to debug are always fixed with one line changes

www/common/cryptpad-common.js

@@ -780,7 +780,8 @@ define([
             newSecret = Hash.getSecrets('drive', newHash);
 
             var optsPut = {
-                owners: [edPublic]
+                owners: [edPublic],
+                initialState: '{}',
             };
 
             console.log("copying contents of old drive to new location");