Add info in FAQ for account migrations

templates/FAQ.html

@@ -37,6 +37,9 @@
         <p>{{T "magnet_link_should_look_like"}} <span style="font-family:monospace">
             magnet:?xt=urn:btih:[hash]&amp;dn=[name]&amp;tr=[tracker]&amp;tr=[...]</span></p>
 
+        <h2>{{T "how_do_i_link_my_old_account"}}</h2>
+        <p>{{T "answer_how_do_i_link_my_old_account"}}</p>
+
         <h2 id="trackers">{{T "which_trackers_do_you_recommend"}}</h2>
         <p>{{T "answer_which_trackers_do_you_recommend"}}</p>
 	<pre>udp://tracker.doko.moe:6969</pre>

translations/en-us.all.json

@@ -283,6 +283,14 @@
     "id": "answer_how_are_we_recovering",
     "translation": "The aforementioned databases are being hosted at nyaa.pantsu.cat and sukebei.pantsu.cat. There is a search function, and (almost) full nyaa functionality should be coming soon."
   },
+  {
+    "id": "how_do_i_link_my_old_account",
+    "translation": "How do I link my old uploads back to my new account?"
+  },
+  {
+    "id": "answer_how_do_i_link_my_old_account",
+    "translation": "Join <a href=\"ircs://irc.rizon.net/nyaapantsu-help\">#nyaapantsu-help@Rizon</a> and ask a moderator to migrate your old torrents while mentioning your old and new usernames."
+  },
   {
     "id": "are_the_trackers_working",
     "translation": "Are the torrents still working?"