Add an option to use RichText instead of StyledText.

This fixes empty space issue at a cost of reduced performance.

qml/Setting.qml

@@ -9,6 +9,7 @@ import "form"
 Page {
     property alias lazyLoad: generalForm.lazyLoad
     property alias asyncMessageDelegate: generalForm.asyncMessageDelegate
+    property alias richText: generalForm.richText
 
     property alias darkTheme: appearanceForm.darkTheme
     property alias miniMode: appearanceForm.miniMode

qml/component/TextDelegate.qml

@@ -45,7 +45,7 @@ Rectangle {
 
             wrapMode: Label.Wrap
             linkColor: darkBackground ? "white" : Material.accent
-            textFormat: Text.StyledText
+            textFormat: setting.richText ? Text.RichText : Text.StyledText
             onLinkActivated: Qt.openUrlExternally(link)
         }
 

qml/form/SettingGeneralForm.qml

@@ -4,6 +4,7 @@ import QtQuick.Controls 2.2
 Page {
     property alias lazyLoad: lazyLoadSwitch.checked
     property alias asyncMessageDelegate: asyncMessageDelegateSwitch.checked
+    property alias richText: richTextSwitch.checked
 
     Column {
         Switch {
@@ -14,6 +15,10 @@ Page {
             id: asyncMessageDelegateSwitch
             text: "Force loading message delegates asynchronously"
         }
+        Switch {
+            id: richTextSwitch
+            text: "Use RichText instead of StyledText"
+        }
 
         Button {
             text: "Invoke GC"

qml/main.qml

@@ -34,6 +34,7 @@ ApplicationWindow {
 
         property alias lazyLoad: settingPage.lazyLoad
         property alias asyncMessageDelegate: settingPage.asyncMessageDelegate
+        property alias richText: settingPage.richText
 
         property alias darkTheme: settingPage.darkTheme
         property alias miniMode: settingPage.miniMode