add tag list
add context circle
add thumbnail grid
refactor thumbnail grid to make model clearer; improve appearance of the case
correct selected border; improve appearance
add tile wall
add step nav; little bug fix for tile wall
add maximizable
remove maximizable since there are unresolvable problems now; fix firefox compatability by changing css reflow method
add font settings to please firefox
fix transition issue; prevent rotating when rotating in tile wall
remove maximizable styles
add header and footer
improve appearance
Merge branch 'master' of https://github.com/yarray/hui