chore(translate): update Italian

Currently translated at 95.1% (231 of 243 strings)
Translation: SimpleEmail/Translations
Translate-URL: https://hosted.weblate.org/projects/simple-email/translations/it/

app/src/main/res/values-it/strings.xml

@@ -1,7 +1,6 @@
-<?xml version="1.0" encoding="utf-8"?>
-
+<?xml version='1.0' encoding='UTF-8'?>
 <resources>
-  <string name="app_copyright">Copyright &#x24B8; 2018 di M. Bokhorst</string>
+  <string name="app_copyright">Copyright Ⓒ 2018 di M. Bokhorst</string>
   <string name="channel_service">Servizio</string>
   <string name="channel_notification">Notifiche</string>
   <string name="channel_error">Errori</string>
@@ -71,7 +70,7 @@
   <string name="title_advanced_swipe">Azioni swipe</string>
   <string name="title_advanced_compact">Visualizzazione messaggio compatto</string>
   <string name="title_advanced_debug">Debug</string>
-  <string name="title_select">Seleziona &#8230;</string>
+  <string name="title_select">Seleziona …</string>
   <string name="title_identity_name">Il tuo nome</string>
   <string name="title_identity_email">Il tuo indirizzo email</string>
   <string name="title_identity_reply_to">Rispondi all\'indirizzo</string>
@@ -95,7 +94,7 @@
   <string name="title_user">Nome utente</string>
   <string name="title_password">Password</string>
   <string name="title_authorize">Seleziona account</string>
-  <string name="title_authorizing">Autorizzazione account &#8230;</string>
+  <string name="title_authorizing">Autorizzazione account …</string>
   <string name="title_setup_advanced">Avanzate</string>
   <string name="title_store_sent">Memorizza i messaggi inviati (normalmente non necessario)</string>
   <string name="title_synchronize_account">Sincronizza (ricevi messaggi)</string>