Info-click fails if list template is not defined

[paul-dorsetcouncil]

Describe the bug If you create a layer but do not define a list template the popup will fail to generate if multiple records exist at a given point.

Expected behaviour We would expect the admin side to enforce the setting of a list template or to fall back to a best guess if not set.

[RobQuincey-DC]

Already fixed as part of #307