- rm jumbotron_bg.png.
+ add account.html.
* support smaller navbar in normal page.
+ add alerk-block style.
* increase font weight of button text.
* ajust button style.
* ajust alert block style.
+ add wider button style.
* move style code to intdex.html form site.css.
* ajust code format.
+ add account.html.
* add missing jumbotron img.
* ajust html code.
+ add weibo.html.
* update account.html.
* ajust panel height.
* ajust ".alert-dismissable.alert-block" style.
+ add close button to dismiss alert.