Merge pull request #832 from sexnothing/develop

Admin theme go to front
Add Text api and SEO meta header
Fix install/meta.txt
Add module config
Improve page API
Improve templates
Improve name
Merge pull request #833 from voltan/develop

Update page module
Fix for remote file upload
Improve update script
Fix bug on render markdown pages
Merge pull request #837 from voltan/develop

Improve update script
Add user custom doc
Update readme-user-custom.md
Refactored author management
Merge pull request #838 from linzongshu/develop

Refactored author management
Fix tag module
Merge pull request #839 from liuchuangww/develop

Fix tag module
Refactored category management
Refactor media management