Active user account when add admin manager
Added access check for login/register
Added access check for login/register
Added nl2br for markdown markup in case extension is not available
Added access check for login/register
Merge pull request #974 from linzongshu/develop

Active user account when add admin manager
Merge pull request #975 from sexnothing/develop

Remove print.css as bootstrap3 already contain it
Remove deprecated print.css
Fixed media upload bug of article
Merge pull request #976 from linzongshu/develop

Fixed media upload bug of article
Merge remote-tracking branch 'upstream/develop' into develop

Conflicts:
	usr/theme/default/template/layout-admin.phtml
Add theme edit function for system module
Merge branch 'develop' of https://github.com/sexnothing/pi into develop