Create new home item fails without error message if name already exists

[SourceCodeSourcerer]

It is not possible to create a new home item if the item name already exists for another home item.

The problem, really, is that error messages are not propagated back to the GUI/Web on errors.

Tried with nightly build HomeManager 2.1-SNAPSHOT-0a0e5 (2016-03-06)

[stefangs]

The error messaging in the WEB-GUI is kind of a sad story right now. The is currently no good way of showing error messages to the user from the edit view. It is in the plan to "reintroduce" that, by adding some kind of error banner line, which can be triggered by an exception, but I have not had time to do that yet...