Fix the issue when deleting templates

Auriga2 commented 1 month ago

Prerequisites

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Description of the Change

Templates can now be deleted (although the null pointer exception is thrown, which will be handled in a separate PR)

The cause was using File.pathSeparator ( ; ) in file path, which doesn't work with java.io.FILE E.g. C:\Users\user1\.CONSTELLATION\Graph Templates\au.gov.asd.tac.constellation.graph.schema.AnalyticSchemaFactory;New Template 1 doesn't exist to delete. Reverted back to use / instead.

Alternate Designs

Why Should This Be In Core?

No way to delete templates otherwise.

Benefits

Possible Drawbacks

Verification Process

File Menu -> Select Manage Template
Select a saved template from the dropdown list
Click Delete button.
Click Ok Button
Open File -> Select Manage Template again and verify the above template is no longer available in the dropdown list