Further Improve Reply Functionality

Quoted replies now include matrix.to links for the event and the user.
UI Rendering has been (slightly) improved... still very WIP.
Restructured the reply structure in the code for future usability
improvements.

src/Utils.cpp

@@ -314,6 +314,20 @@ utils::markdownToHtml(const QString &text)
         return result;
 }
 
+QString
+utils::getFormattedQuoteBody(const RelatedInfo &related, const QString &html)
+{
+        return QString("<mx-reply><blockquote><a "
+                       "href=\"https://matrix.to/#/!%1\">In reply "
+                       "to</a><a href=\"https://matrix.to/#/%2\">%3</a><br "
+                       "/>%4</blockquote></mx-reply>")
+                 .arg(QString::fromStdString(related.related_event),
+                      related.quoted_user,
+                      related.quoted_user,
+                      related.quoted_body) +
+               html;
+}
+
 QString
 utils::linkColor()
 {