Simplify pages/base.
Simplify pages/base.

deivid-rodriguez/activeadmin,mrjman/activeadmin,mrjman/activeadmin,javierjulio/activeadmin,activeadmin/activeadmin,deivid-rodriguez/activeadmin,activeadmin/activeadmin,mauriciopasquier/active_admin,vraravam/activeadmin,mrjman/activeadmin,vraravam/activeadmin,javierjulio/activeadmin,vraravam/activeadmin,deivid-rodriguez/activeadmin,activeadmin/activeadmin,mauriciopasquier/active_admin,mauriciopasquier/active_admin,javierjulio/activeadmin