change theme to hushaw
fix tags.html
add github and rss in navigation bar
adjust post meta: change language to English, remove categories.html, add comment count
fix title and footer
fix post.date url
change page-brand h1 to sans-serif, and larger font size
change post-heading font color and size
change post-heading font to sans-serif
change post-entry font size to 16px
set markdown parser to redcarpet
rm google_analysis.md, todo fix analysis
modify posts markdown