[web] add notification management for single notification

CHANGELOG.md

go.mod

go.sum

internal/db/notificationsrepo/notifications.go

internal/endpoints/notification/notifications.go

internal/notifier/client/notifier_client.go

internal/server/errorHandler.go

internal/server/handlers.go

internal/server/paths/paths.go

internal/server/routes/routes.go

internal/server/server.go

...rnal/server/web/partials/notifications/home-pane.mustache

...nal/server/web/partials/notifications/management.mustache

internal/server/web/partials/scripts.mustache

internal/server/web/sites/manage-notification.mustache

internal/server/web/static/js/home.js

internal/server/web/static/js/login.js

internal/server/web/static/js/notification-management.js

internal/server/web/static/js/notifications.js

internal/server/web/static/js/tokeninfo.js