fix(web): replaced JSON comparisons with ID comparisons in viewer

[z3dev]

Small change... BIG performance boost, especially with large designs.

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Tested with Firefox, Chrome, and Safari

[z3dev]

@hrgdavor How about reviewing these changes?

This is something that I have been working on for a few weeks, and finally decided that the JSON comparisons were inappropriate (and HUGE CPU / MEMORY hogs). Simple comparisons if 'id' is enough.

[hrgdavor]

Yes, this will definitely help for large designs, and is better choice here.

This is something I will consider for the new web, as info on what was updated is crucial for the viewer to optimize rendering.

[mister-jscad]

Good changes. Hope this helps performance.