cmills1095

Converting another batch of benchmark documentation to sphinx format. After this, one more large batch or two small ones should finish up the remaining benchmarks. As usual, I only changed...

This should be the last of the benchmarks. A lot of figures with subfigures I left as as they were (separate), let me know if you want me to merge...

Examples: subduction 3d

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Notes: Too much for one pull request? The different sections are each in their own commit, hope that helps. Better to do a pull request for each file? Tell me...