add g0v logo

copy from http://g0v.tw
bills: add basic open graph protocol
Revert "bills: add basic open graph protocol"

This reverts commit b902d68aa556f1707be2886f19d2ff4fc6c6f6c1.
add ly related icons, and example (in /about)
refine about - icon list layout
add search icon
prototype search by name of law
fix search icon position
fix mkwave error
regen for 1c14a21