[screenshots] progress bar

CHANGELOG.md

@@ -21,6 +21,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     - not waiting for the categories file to be retrieved from the cloud during application boot ( reduces boot time )
     - caching cloud categories to the disk so they can be used in scenarios when it is not possible to retrieve them ( e.g: internet is off )
 - minor thread improvements
+
+### UI
+- Screenshots panel:
+    - "downloading" label replaced by a progress bar
     
 ### Fixes
 - application not initializing when there is no internet connection