adds mobile styles for the stream.
adds mobile styles for the header and the x button.
adds mobile styles to the about overlays.
modifies the full styles of the overlay to make it look nicer--just the about overlay, though.
begins to make the last-words interactive mobile-friendly.
swaps out the dummy text in the opening with the real text.
fixes the .x button in the interlude view for mobile.
fixes the font scale to work at mobile size in the last words interlude.
finalizes changes to the last words overlays for mobile.
Merge pull request #25 from Etc-Gallery/mobile-version

Adds a mobile version of the site. Closes #21. Also closes #20.