fix enableOTP handling to match docs: prioritize store, then extension config

it will have use in `detailsInterface.js`, not just `background.js`
(next patch).

src/background.js

@@ -870,7 +870,7 @@ function hostAction(settings, action, params = {}) {
 async function parseFields(settings, login) {
     var response = await hostAction(settings, "fetch", {
         storeId: login.store.id,
-        file: login.loginPath,
+        file: login.login + ".gpg",
     });
     if (response.status != "ok") {
         throw new Error(JSON.stringify(response)); // TODO handle host error

src/helpers.js

@@ -87,14 +87,10 @@ function prepareLogins(files, settings) {
     for (let storeId in files) {
         for (let key in files[storeId]) {
             // set login fields
-            const loginPath = files[storeId][key];
-            const lastDot = loginPath.lastIndexOf(".");
-            const loginName = lastDot < 0 ? loginPath : loginPath.substr(0, lastDot);
             const login = {
                 index: index++,
                 store: settings.stores[storeId],
-                login: loginName,
-                loginPath: loginPath,
+                login: files[storeId][key].replace(/\.gpg$/i, ""),
                 allowFill: true,
             };