Collection Manager: QCD tooltip fixes. Task: T69577

Add LMB shortcut to the QCD header widget tooltip.
Remove redundant references to QCD from this tooltip.

object_collection_manager/__init__.py

@@ -22,7 +22,7 @@ bl_info = {
     "name": "Collection Manager",
     "description": "Manage collections and their objects",
     "author": "Ryan Inch",
-    "version": (2, 7, 20),
+    "version": (2, 7, 21),
     "blender": (2, 80, 0),
     "location": "View3D - Object Mode (Shortcut - M)",
     "warning": '',  # used for warning icon and text in addons panel

object_collection_manager/qcd_operators.py

@@ -140,8 +140,9 @@ class ViewMoveQCDSlot(Operator):
         slot_string = f"QCD Slot {properties.slot}: \"{slot_name}\"\n"
 
         hotkey_string = (
-            "  * Shift+LMB - Toggle QCD slot.\n"
-            "  * Ctrl+LMB - Move objects to QCD slot.\n"
+            "  * LMB - Isolate slot.\n"
+            "  * Shift+LMB - Toggle slot.\n"
+            "  * Ctrl+LMB - Move objects to slot.\n"
             "  * Ctrl+Shift+LMB - Toggle objects' slot"
             )