improve script character selector

[jakeisnt]

character selector should be dropdown with all characters in it; currently selected character is the one on the lhs it should be above all of the scripts on mobile, not below

[jakeisnt]

box has text: "You're acting as (Jake)." Clicking (Jake) - which looks like button that has blue color - opens the dropdown that allows for selecting the character. extensible to multiple characters 👍👍

text in background should be a darker gray / lighter on white screens to fade into background; might need another color for this

[jakeisnt]

save current character to url parameter: ?actingAs=jake

[jakeisnt]

done :sunglasses: