Invenio-userprofiles

- forms: add helper for preferences form

- add translations

- add redirection on user profile form submit
- allow updating preferences for read only profiles

- Style radio buttons and remove dotted bullet points in settings page.

- Fixes the Alembic recipe dependency for removing the userprofiles table.

- Changes the profile backend to use the new Invenio-Accounts 2.0 profile
field instead of a separate database table.

- Adds support for allowing users to change their visibility settings.