Fix invisible room categories still taking space

TODO.md

@@ -9,8 +9,6 @@
   - Icons and images aren't reloaded
   - HStyle singleton isn't reloaded
   - `MessageDelegate.qml:63: TypeError: 'reloadPreviousItem' not a function`
-  - Bug when resizing window being tiled (i3), can't figure it out
-  - Can scroll the SidePane rooms too far
 
 - UI
   - Improve SidePane appearance when at min width

harmonyqml/backend/model/list_model.py

@@ -155,7 +155,6 @@ class ListModel(QAbstractListModel):
 
         raise ValueError(f"No item in model data with "
                          f"property {prop!r} set to {is_value!r}.")
-        from PyQt5.QtCore import pyqtRemoveInputHook as PRI; import pdb; PRI(); pdb.set_trace()
 
 
     @pyqtSlot(int, result="QVariant")

harmonyqml/components/SidePane/RoomCategoryDelegate.qml

@@ -5,8 +5,8 @@ import "../Base"
 Column {
     id: roomCategoryDelegate
     width: roomCategoriesList.width
-    height: childrenRect.height
-    visible: roomList.contentHeight > 0
+    height: roomList.model.rowCount() > 0 ? childrenRect.height : 0
+    visible: roomList.model.rowCount() > 0
 
     property string roomListUserId: userId
     property bool expanded: true