A lot of improvements.

Fix laggish RoomListView when dragging.
Remove per-room timer and add timer in RoomForm.
Remove singleton module and use file as singleton.
Minor UI tweak in RoomListView.
Pass room to RoomListView via "currentRoom" delegate property and remove
RoomListForm-wide currentRoom.
Put menu files in a separate folder.
Show initial image in ImageStatus when avatar is not loaded.
Add about page.
Merge all setting pages into Setting.qml.
Add option to rearrange rooms by activity.
Add option to use RichText parser.
Add document url.

qml/component/MessageDelegate.qml

@@ -2,14 +2,11 @@ import QtQuick 2.9
 import QtQuick.Controls 2.2
 import QtQuick.Controls.Material 2.2
 import Matrique 0.1
-import MatriqueSettings 0.1
+import Matrique.Settings 0.1
 
 Item {
     readonly property bool hidden: marks === EventStatus.Redacted || marks === EventStatus.Hidden
-
-    readonly property bool darkTheme: Material.theme == Material.Dark
-    readonly property color background: darkTheme ? "#242424" : "lightgrey"
-
+    readonly property color background: MSettings.darkTheme ? "#242424" : "lightgrey"
     readonly property bool sentByMe: author === currentRoom.localUser
     readonly property bool isState: eventType === "state" || eventType === "emote"
 
@@ -24,13 +21,15 @@ Item {
 
     AutoMouseArea {
         anchors.fill: parent
-        onSecondaryClicked: Qt.createComponent("MessageContextMenu.qml").createObject(this)
+
+        propagateComposedEvents: true
+        onSecondaryClicked: Qt.createComponent("qrc:/qml/menu/MessageContextMenu.qml").createObject(this)
     }
 
     Loader {
         id: delegateLoader
 
-        asynchronous: MatriqueSettings.asyncMessageDelegate
+        asynchronous: MSettings.asyncMessageDelegate
 
         source: {
             if (eventType == "redaction" || hidden) return ""