Feature - section explainers popup

We need to help people understand eramba a bit more than trainings, we need explainers on every load of an un-used section:

  • they loads to any user until they opt ou. Example: Martin and John have accounts, they load legal, John opted out but martin didnt…martin sees explainers john doesnt

  • we need explainers for “what the section does” and “how” (dependencies) and common functionalities (tabs, notifications, etc). This explainer pops up by clicking the “Explain me” helper button we’ll need to fit somewhere

github: https://github.com/eramba/eramba_v2/issues/2857