updater: use local user.js file

updater.sh

@@ -241,7 +241,7 @@ remove_comments() { # expects 2 arguments: from-file and to-file
 
 # Applies latest version of user.js and any custom overrides
 update_userjs() {
-  declare -r newfile="$(download_file 'https://raw.githubusercontent.com/arkenfox/user.js/master/user.js')"
+  declare -r newfile="$HOME/.mozilla/firefox/user.js"
   [ -z "${newfile}" ] && echo -e "${RED}Error! Could not download user.js${NC}" && return 1 # check if download failed
 
   echo -e "Please observe the following information:
@@ -255,7 +255,7 @@ update_userjs() {
     echo -e "\n"
     if [[ $REPLY =~ ^[Nn]$ ]]; then
       echo -e "${RED}Process aborted${NC}"
-      rm "$newfile"
+      #rm $newfile
       return 1
     fi
   fi
@@ -272,7 +272,7 @@ update_userjs() {
   [ "$BACKUP" = 'single' ] && bakname='userjs_backups/user.js.backup'
   cp user.js "$bakname" &>/dev/null
 
-  mv "${newfile}" user.js
+  cp "${newfile}" user.js
   echo -e "Status: ${GREEN}user.js has been backed up and replaced with the latest version!${NC}"
 
   if [ "$ESR" = true ]; then