2021-8-2 bug fixes

just some small fixes i've accrued over the first week!

• added a waiting screen after clicking "save" on the web build, to ensure the browser actually has enough time to save the data
• turned off debug printout on windows build (whoops)
  
• mural/draw-a-paw drawings no longer persist when exiting to main menu and starting a new game
• added hint that you can go up the escalator
• made poem in park easier to find
• fixed lots of typos!