minimum platform & headswap

basic reveal slide functionality, transplant of expHadley head markup,
branching style files for further disentangling of stylesheet into
deckhadley / deckzonal.css exceptions, preloader temporarily disabled
until footer & platform ketchup permits stack collapsing with fragments,
extent of subletting, passing into trigger/statics in process of making
individual slide finish-grade (loop work to reduce /image directory to
wisp_wiggle)