apps: rename the config functions

src/apps.js

@@ -95,8 +95,8 @@ exports = module.exports = {
     downloadFile,
     uploadFile,
 
-    backupConfig,
-    restoreConfig,
+    writeConfig,
+    loadConfig,
 
     PORT_TYPE_TCP: 'tcp',
     PORT_TYPE_UDP: 'udp',
@@ -2854,7 +2854,7 @@ async function uploadFile(app, sourceFilePath, destFilePath) {
     });
 }
 
-async function backupConfig(app) {
+async function writeConfig(app) {
     assert.strictEqual(typeof app, 'object');
 
     if (!safe.fs.writeFileSync(path.join(paths.APPS_DATA_DIR, app.id + '/config.json'), JSON.stringify(app, null, 4))) {
@@ -2865,7 +2865,7 @@ async function backupConfig(app) {
     if (!error && icons.icon) safe.fs.writeFileSync(path.join(paths.APPS_DATA_DIR, app.id + '/icon.png'), icons.icon);
 }
 
-async function restoreConfig(app) {
+async function loadConfig(app) {
     assert.strictEqual(typeof app, 'object');
 
     const appConfig = safe.JSON.parse(safe.fs.readFileSync(path.join(paths.APPS_DATA_DIR, app.id + '/config.json')));