Apply suggestions from code review

Co-authored-by: bjoern <r10s@b44t.com>

Author: Simon-Laux

deltachat-jsonrpc/src/api.rs

@@ -236,7 +236,7 @@ impl CommandApi {
     /// The `AccountsBackgroundFetchDone` event is emitted at the end,
     /// process all events until you get this one and you can safely return to the background
     /// without forgeting to create notifications caused by timing race conditions.
-    async fn background_fetch_for_all_accounts(&self, timeout_in_seconds: f64) -> Result<()> {
+    async fn accounts_background_fetch(&self, timeout_in_seconds: f64) -> Result<()> {
         self.accounts
             .write()
             .await

node/constants.js

@@ -29,7 +29,7 @@ module.exports = {
   DC_DOWNLOAD_FAILURE: 20,
   DC_DOWNLOAD_IN_PROGRESS: 1000,
   DC_DOWNLOAD_UNDECIPHERABLE: 30,
-  DC_EVENT_BACKGROUND_FETCH_COMPLETED_FOR_ALL_ACCOUNTS: 2200,
+  DC_EVENT_ACCOUNTS_BACKGROUND_FETCH_DONE: 2200,
   DC_EVENT_CHAT_EPHEMERAL_TIMER_MODIFIED: 2021,
   DC_EVENT_CHAT_MODIFIED: 2020,
   DC_EVENT_CONFIGURE_PROGRESS: 2041,

node/events.js

@@ -37,5 +37,5 @@ module.exports = {
   2111: 'DC_EVENT_CONFIG_SYNCED',
   2120: 'DC_EVENT_WEBXDC_STATUS_UPDATE',
   2121: 'DC_EVENT_WEBXDC_INSTANCE_DELETED',
-  2200: 'DC_EVENT_BACKGROUND_FETCH_COMPLETED_FOR_ALL_ACCOUNTS'
+  2200: 'DC_EVENT_ACCOUNTS_BACKGROUND_FETCH_DONE'
 }