Merge pull request #17 from SmileZero/feature/update_user_css

Feature/update user css
Merge pull request #19 from SmileZero/master

fix seed
add new choir button
add new choir page
convert static page
complete some select options
can create choir
change home page, show page and search page for choir
change split regex
Merge pull request #20 from SmileZero/feature/new_choir

Feature/new choir
Merge pull request #21 from SmileZero/develop

add new choir page