add missing content description

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/res/layout/account_item.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?><!--
-  Nextcloud TAlk application
+  Nextcloud Talk application
 
   Copyright (C) 2016 Andy Scherzinger
   Copyright (C) 2016 Nextcloud
@@ -61,6 +61,7 @@
                 android:layout_height="18dp"
                 android:layout_gravity="bottom|end"
                 android:background="@drawable/round_bgnd"
+                android:contentDescription="@string/nc_account_chooser_active_user"
                 android:src="@drawable/ic_check_circle"
                 tools:visibility="gone" />
         </FrameLayout>

scripts/analysis/lint-results.txt

@@ -1,2 +1,2 @@
 DO NOT TOUCH; GENERATED BY DRONE
-      <span class="mdl-layout-title">Lint Report: 3 errors and 339 warnings</span>
+      <span class="mdl-layout-title">Lint Report: 3 errors and 338 warnings</span>