Put PSF into en and zh-tw.
Merge pull request #40 from drakeguan/special-sponsor-psf

Put PSF into en and zh-tw.
improve layout of en, zh sponsor info

Duplicated header is now dropped.
remove duplicated title
add reg financial aid en, zh info, close #27
edit punctuation and capital word
move serious about page to subpage of the new one
update new about page link
add ticket date 懶人包
add sponsor logos (orig from backend repo)
optimize PNG filesizes
update logo link
update sponsor pics
update sponsor why pic link
work on new about page info
add talk type infograph(part)
update link to reg/financial aid
add everybody pays link in en version
update about page and add buy ticket button

中文懶人包上線，歡迎來改！
update 懶人包 layout