[skip CI] Translate dde-launchpad.ts in ca

84% of minimum 50% translated source file: 'dde-launchpad.ts'
on 'ca'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

translations/dde-launchpad_ca.ts

@@ -205,7 +205,7 @@
     <message>
         <location filename="../qml/windowed/SideBar.qml" line="40"/>
         <source>Free sorting</source>
-        <translation type="unfinished"/>
+        <translation>Classificació lliure</translation>
     </message>
     <message>
         <location filename="../qml/windowed/SideBar.qml" line="54"/>