various changes for UW folks.  More usability and explanations for things.

make button bigger for take patients
self vitals -> your vitals
make text wrap on pico matching
remove evaluate cases
small dialogue before let's play on matching
color code easy/med/hard
add subtitles to map to explain it a bit
add other search links
switch xray images
switch spirometry questions
normal -> standard
change s&s question for spirometry
add link for PICO model explanation
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