Moving tables to a new layer does not move relationships

[hg2581]

Bug description
When moving tables to a newly created layer, the lines showing relationships remain in the original layer. if this is a bug, unfortunately I am not able to update to a newer version of pgmodeler at this time.

How to reproduce
Create a new layer in the model and move all tables in a schema to the new layer and you'll find the relatinship lines remain in the original layer.

Expected behavior
Both tables and relationships between these tables should be moved together

Screenshots
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Info about your desktop

• OS: CentOS
• Version: 7
• Window manager:
• pgModeler version: 0.9.3
• Qt version:

Stacktrace / Debug info
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Additional info
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