[ui] improvement -> not displaying the number of packages when none is displayed / available

CHANGELOG.md

@@ -47,6 +47,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     - saving settings time (=~ -11%)
     - internet checking time (=~ -58%)
 - UI
+    - not displaying the number of packages when none is displayed / available
     - minor improvements
     
 ### Fixes

bauh/view/qt/window.py

@@ -840,7 +840,11 @@ class ManageWindow(QWidget):
             self.table_apps.change_headers_policy(QHeaderView.Stretch)
             self.table_apps.change_headers_policy()
             self._resize(accept_lower_width=len(self.pkgs) > 0)
-            self.label_displayed.setText('{} / {}'.format(len(self.pkgs), len(self.pkgs_available)))
+
+            if len(self.pkgs) == 0 and len(self.pkgs_available) == 0:
+                self.label_displayed.setText('')
+            else:
+                self.label_displayed.setText('{} / {}'.format(len(self.pkgs), len(self.pkgs_available)))
         else:
             self.label_displayed.hide()