fix weiboshow display on mac chrome
update .gitignore
Delete .DS_Store
modify catetags display on foot,support multi cates better
Merge branch 'master' into dev

add quotation marks in languages/default.yml to make hexo 2.8 works
use better MathJax strategy
modify default share-buttons for add renren & change position
Merge branch 'dev' of https://github.com/PhiloSky/jacman into PhiloSky-dev

use better MathJax strategy
load google-analytics when need
Merge branch 'PhiloSky-dev' into dev

use better MathJax strategy
Merge branch 'dev'

merge changes from dev