New function instead of duplicate code for adding Game Center

Also changed link to include /s/ URL convention
Better var names
Wrap text instead of creating each line on results screen
Dynamically adjust results text y coords
Cleanup

For readability and efficiency
Fix canvas offset on mobile by calculating margins and borders of altImg
Clean up CSS
Clean up getCoordinates file
Loop through buttons instead of HTML for each
Use a less messy naming convention for stored coordinates
Remove unnecessary canvas and context calls
Put coordinates from builder into array

So we can loop! So much cleaner!
Put answer check and show answers coord checks into loops