feat: edit shortcuts

client/components/admin/admin-general.vue

client/store/page.js

client/themes/default/components/page.vue

client/themes/default/scss/app.scss

server/app/data.yml

server/controllers/common.js

server/graph/resolvers/site.js

server/graph/schemas/site.graphql

server/models/pages.js

server/views/page.pug