Remove any temp files before installs or upgrades

src/freedombone-utils-selector

     do
         if [[ ${APPS_INSTALLED[$app_index]} == "0" ]]; then
             if [[ ${APPS_CHOSEN[$app_index]} == "1" ]]; then
+
+                # remove any temp files
+                rm -rf /tmp/*
+
                 if [ ${is_interactive} ]; then
                     # clears any removal indicator
                     function_check reinstall_app