images update, sync since all time option, qdb write location fixes, lastUsersSync fixes

src/utils/p2putils.ts

@@ -1,5 +1,5 @@
 import { PeerInfo } from '../types/basicTypes'
-import { paths } from './files'
+import { files, paths, readAndValidateFile } from './files'
 import { parseCookie, post } from './networkUtils'
 import utils from './utils'
 
@@ -14,10 +14,15 @@ export function isPeerSameAs(peer1: PeerInfo, peer2: PeerInfo): boolean {
     return peer1.host === peer2.host && peer1.port === peer2.port
 }
 
-export function updatePeersFile(
-    peers: PeerInfo[],
-    updatedPeer: PeerInfo
-): void {
+export function updatePeersFile(updatedPeer: PeerInfo): void {
+    const newVal = readAndValidateFile<PeerInfo[]>(files.peersFile)
+    let peers
+    if (newVal) {
+        peers = newVal
+    }
+    if (!peers)
+        throw new Error('Peers file was invalid while trying to update it!')
+
     const updatedPeers = peers.map((x) => {
         if (isPeerSameAs(updatedPeer, x)) {
             return {