Rework models hierarchy, room categories models

harmonyqml/components/Base/HAvatar.qml

@@ -5,7 +5,7 @@ Rectangle {
     property bool hidden: false
     property var name: null  // null, string or PyQtFuture
     property var imageSource: null
-    property int dimension: 48
+    property int dimension: 36
 
 
     readonly property string resolvedName:

harmonyqml/components/Base/HNoticePage.qml

@@ -3,6 +3,7 @@ import QtQuick.Layouts 1.3
 import "../Base"
 
 HRowLayout {
+    property alias label: noticeLabel
     property alias text: noticeLabel.text
     property alias color: noticeLabel.color
     property alias font: noticeLabel.font
@@ -19,7 +20,10 @@ HRowLayout {
 
         Layout.margins: 10
         Layout.alignment: Qt.AlignCenter
-        Layout.maximumWidth: parent.width - Layout.margins * 2
+        Layout.maximumWidth:
+            parent.width - Layout.leftMargin - Layout.rightMargin
+
+        opacity: width > Layout.leftMargin + Layout.rightMargin ? 1 : 0
 
         background: Rectangle {
             id: noticeLabelBackground