dashborad#index, re-style
dashborad#index, show counter of users
dashboard#index, show new registertion user
application_helper, change all strftime to  use human_time helper.
Create manage orders controller
orders/form, fix bugs, don't have phone text_feild, separate form from new.html
orders_controller, add phone to strong parameter.
Complete manage orders page.
manage/product/index re-style.
Add logo image.
header_helper.rb, add header helper
og.html, meta data.
show.html, improve show page.
Merge branch 'feature/manage_dashboard' into develop