Merge pull request #14 from nya/feature/whitelisting

src/pomf.cr

src/pomf/controllers/admin_action_controller.cr

src/pomf/controllers/admin_page_controller.cr

src/pomf/controllers/file_controller.cr

src/pomf/controllers/upload_controller.cr

src/pomf/models/upload.cr

src/pomf/models/user.cr

src/pomf/public/js/main.js

src/pomf/router.cr

src/pomf/util/controllers.cr

src/pomf/util/recaptcha.cr

src/pomf/views/admin/users/edit.slang

src/pomf/views/pages/download.slang