fix

iOSClient/Images.xcassets/offline.imageset/Contents.json

@@ -1,7 +1,7 @@
 {
   "images" : [
     {
-      "filename" : "offline.pdf",
+      "filename" : "archive-arrow-down-outline.svg",
       "idiom" : "universal"
     }
   ],

iOSClient/Images.xcassets/offline.imageset/archive-arrow-down-outline.svg

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="24" height="24" viewBox="0 0 24 24"><path d="M20 21H4V10H6V19H18V10H20V21M3 3H21V9H3V3M5 5V7H19V5M10.5 11V14H8L12 18L16 14H13.5V11" /></svg>