Upgrade hugo to 0.20.2 and added uglyurls = true to fix issues we when upgrading from 0.19 to 0.20 recently, also fixed 404 photos*

Install all ext to run CI build.

Revert to Hugo v0.19

v0.20 is not working properly with the current site.

Added percona container

Fixing typo in docs menu

Fixing Adminer can’t login

Add Travis CI status image.

set data save path(mysql/redis/memcached..)

Fixing php fpm ghostscript