Info or text in place of add records

[jrchudy]

In record app, there are some cases where a related table will be shown with no "add record" button and a "bulk edit" button. This can even occur when there are no rows in the table. Some examples of this can be seen on the Experiment record page. These cases have multiple hops as part of the foreign key definition, so more steps need to be taken to be able to add records to this Experiment.

There should be some element that is shown in the same place as the Add records button when it is not shown. Different elements that we want to consider:

• configurable link that might point to documentation
• icon or symbol with a tooltip explaining steps to take
  • can chaise/ermrestJS derive what steps should be taken and in what order to be able to "add"?

We also discussed creating nested groups for related entities, maybe groups could be automatically done for related tables that rely on other related tables in the same record context.