Organize project files

Put QML components into folders, remove unused ones, split __init__.py
with engine.py.

harmonyqml/components/side_pane/AccountDelegate.qml

@@ -0,0 +1,85 @@
+import QtQuick 2.7
+import QtQuick.Controls 2.0
+import QtQuick.Layouts 1.4
+import "../base" as Base
+
+ColumnLayout {
+    id: "accountDelegate"
+    spacing: 0
+    width: parent.width
+
+    RowLayout {
+        id: "row"
+        spacing: 0
+
+        Base.Avatar { id: "avatar"; username: display_name; dimmension: 36 }
+
+        ColumnLayout {
+            Layout.fillWidth: true
+            Layout.fillHeight: true
+            spacing: 0
+
+            Base.HLabel {
+                id: "accountLabel"
+                text: display_name
+                elide: Text.ElideRight
+                maximumLineCount: 1
+                Layout.fillWidth: true
+                leftPadding: 6
+                rightPadding: leftPadding
+            }
+
+            TextField {
+                id: "statusEdit"
+                text: status_message || ""
+                placeholderText: qsTr("Set status message")
+                background: null
+                color: "black"
+                selectByMouse: true
+                font.family: "Roboto"
+                font.pixelSize: 12
+                Layout.fillWidth: true
+                padding: 0
+                leftPadding: accountLabel.leftPadding
+                rightPadding: leftPadding
+
+                onEditingFinished: {
+                    Backend.setStatusMessage(user_id, text)
+                    pageStack.forceActiveFocus()
+                }
+            }
+        }
+
+        Base.HToolButton {
+            id: "toggleExpand"
+            iconName: roomList.visible ? "up" : "down"
+            Layout.maximumWidth: 28
+            Layout.maximumHeight: Layout.maximumWidth
+
+            onClicked: {
+                toggleExpand.ToolTip.hide()
+                roomList.visible = ! roomList.visible
+            }
+        }
+    }
+
+    RoomList {
+        id: "roomList"
+        visible: true
+        user: Backend.getUser(user_id)
+
+        Layout.minimumHeight:
+            roomList.visible ?
+            roomList.contentHeight + roomList.anchors.margins * 2 :
+            0
+        Layout.maximumHeight: Layout.minimumHeight
+
+        Layout.minimumWidth: parent.width - Layout.leftMargin * 2
+        Layout.maximumWidth: Layout.minimumWidth
+
+        Layout.margins: accountList.spacing
+        Layout.leftMargin:
+            sidePane.width < 36 + Layout.margins ? 0 : Layout.margins
+        Layout.rightMargin: Layout.leftMargin
+    }
+}