Don't clear available apps array

src/freedombone-utils-selector

 
     FILES=/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-*
 
-    APPS_AVAILABLE=()
     APPS_CHOSEN=()
 
     # for all the app scripts

src/freedombone-utils-setup

     function_check create_completion_file
     create_completion_file
 
+    function_ckeck detect_installable_apps
+    detect_installable_apps
+
     function_check choose_apps_for_variant
     choose_apps_for_variant "$SYSTEM_TYPE"