Remove todo about frontend configuration, and create issue plone#1326

Author: stevepiercy

docs/install/manage-add-ons-packages.md

@@ -401,25 +401,3 @@ The command `make build-backend`:
     -   Installs Plone core packages and add-ons from the files generated by `mxdev`.
 
 You can configure your Zope instance as described in the section {ref}`manage-common-management-tasks-label`.
-
-
-````{todo}
-configuration frontend:
-
-- add an add-on
-- checkout an add-on for development with mrs.developer
-
-Add info here or link to respective frontend chapter.
-localhost:8050/volto/addons/index.html#configuring-a-volto-project-to-use-an-addon
-This already exists above:
-For developing add-ons for the Plone frontend, Volto, see {doc}`volto/addons/index`.
-
-
-run
-```
-make install-frontend
-make start-frontend
-```
-
-not: `make build-frontend`. Unfortunatly `build` means different things in frontend and backend. `build frontend` means production build. `build backend` means: apply changed configuration.
-````