init commit with devise finished
g model page_view
db:migrate
rails g controller PageView create
create api to upload data
make login work by del csrf
change start_time from timestamp to float
add page_view index page
add css for page_view list
beautify page_view index style
add time format in page_view index
add end_time && migrate
add gap
add default icon for url
use url if no title
move route to page_view#index
add duration and end_time
hide title when it is too long
add pagination
merge record if last record is juat the same