Updated Views::IndexGenerator to copy all partials

[goosys]

I believe this is an oversight from when the templates were split in a previous version.
Please review.

[nickcharlton]

I'm not sure if we do actually want to do this — are you finding you do override stuff like pagination, or the headers? The code here hasn't changed much in years.

One other option would be to add a new generator for overriding the specifics, or we could also just do nothing and let users figure it out!

[goosys]

@nickcharlton
Thank you for the review.

These templates are not generated by any generator. Shouldn't we enable them to be generated by the generator as a guide for users who want to customize the templates?

One other option would be to add a new generator for overriding the specifics

I'm prepared to create a new generator and submit a pull request. In that case, what do you think would be an appropriate name for the generator?