Importing Child Templates does not work

[tomas-knap]

Steps to reproduce:

1. Under DPU templates, import one root DPU template (e.g., e-sparqlEndpoint).
2. Copy such DPU template to create child DPU templates, name it somehow (differently from its parent)

3) export only the child DPU template (e-sparqlEndpoint 1 in this case) 4) delete e-sparqlEndpoint 1 from the tree 5) try to import previously exported e-sparqlEndpoint 1 6) As a result you got:

But such message is wrong, because you are NOT trying to import e-sparqlEndpoint (root DPU template), but rather its child (e-sparqlEndpoint 1). So this could fail with such message only if the same named child of e-sparqlEndpoint already exists in the system.

Expected behavior: Child DPU template may be imported.

Problem is probably with: https://github.com/UnifiedViews/Core/blob/develop/commons-app/src/main/java/cz/cuni/mff/xrg/odcs/commons/app/module/DPUModuleManipulator.java#L181-L183 or somewhere around in this method.

Related to #356
Could be related to: #173

[tomas-knap]

Tested, this works correctly. Will be closed when #521 is merged