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
Merge pull request #838 from linzongshu/develop

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

Fix tag module
Added block body display mode support
Merge pull request #840 from linzongshu/develop

Refactored category management
Added block body display mode support
Fix for system module upgrader
Text correction
Merge pull request #843 from linzongshu/develop

Refactored custom form page
Fix item link
Tag list update
Tag list update
Merge pull request #845 from sexnothing/develop

Tag list update
Refactored user privacy setting
Merge branch 'develop' of https://github.com/pi-engine/pi into develop