add "replace" and "upload" functionality
Created by: liyakun
add "replace" and "upload" functionalities
add "upload" file name check
add upload service with commit_message_replace
add replace action
add "replace" view
show "replace"
add "replace" commit message
add "replace" and "upload" test
add "replace" and "upload" test
support "replace" and "upload" functionalities
add "upload" view
add upload button
show "upload"
new functionality added