Merge pull request #70 from nukeviet/develop

Complete extension class
Merge pull request #71 from nukeviet/develop

Select category view sub
Module download: Remove old comment system
Update block global.site_mods
Update admin theme
Update data install
Remove old icons
Update data install
Moudle download: Update block category
Format code
Merge pull request #373 from hongoctrien/develop

Module download: Remove old comment system