Updating gallery

  1. Backup the albums, the working gallery code and dump the databases
  2. Put all the Gallery sites into the maintanance mode
  3. Get the newest full version of Gallery
  4. Unzip the file over the existing version of the Gallery
  5. Navigate as an admin to the main page
  6. Run the updater
  7. Run the cleanup script if necessary
  8. Check whether everything works fine
  9. Change the sites mode to active