Tool Plugins need Factory Creation

[ghutchis]

Each thread of Avogadro needs a new instance of a tool so that when you select it there is a configuration dialog. Else each time you open a new thread "New" the tool dialog gets a new owner. If the newly created thread is desroyed, that widget gets destroyed too.

Reported by: dcurtis3

[ghutchis]

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Closing this. We have decided to make each "project" have it's own window and thus it's own thread.

Original comment by: dcurtis3

[ghutchis]

This issue was moved to cryos#51