Small fix

app/src/main/java/eu/faircode/email/EntityMessage.java

@@ -140,7 +140,7 @@ public class EntityMessage implements Serializable {
     public Boolean reply_domain; // differs from 'from'
     public String avatar; // lookup URI from sender
     public String sender; // sort key: from email address
-    public Address[] submitter;
+    public Address[] submitter; // sent on behalf of
     public Address[] from;
     public Address[] to;
     public Address[] cc;
@@ -488,6 +488,7 @@ public class EntityMessage implements Serializable {
                     Objects.equals(this.reply_domain, other.reply_domain) &&
                     Objects.equals(this.avatar, other.avatar) &&
                     Objects.equals(this.sender, other.sender) &&
+                    MessageHelper.equal(this.submitter, other.submitter) &&
                     MessageHelper.equal(this.from, other.from) &&
                     MessageHelper.equal(this.to, other.to) &&
                     MessageHelper.equal(this.cc, other.cc) &&