Spike: Proof of concept for supporting customizable Header, footer, home page

[scolapasta]

This should be fairly straightforward, but we have been discussing the idea of having customizable html, css, javascript, etc, that lives outside of the war file but is called by the html in the war file (via settings).

This is just to wire something simple up to confirm that it will work and that are no unexpected surprises.

[TaniaSchlatter]

Here's my take on what's desirable:

[mheppler]

Customization test files are ready for review with @scolapasta for a few of the most common use cases this spike covers.

[sekmiller]

Thanks to input from @mheppler and @scolapasta we are ready to declare the spike done. We proved that we are able to serve custom files from outside the WAR file to customize pages. The next step is to plan the implementation for #3639, the actual inclusion in the custom Header, Footer and Homepage.

[pdurbin]

@sekmiller cool. Is there any code to share?

[sekmiller]

I just pushed code to the new branch https://github.com/IQSS/dataverse/tree/%233639-Customiztion-header-footer-homepage (and I spelled Customiztion wrong on the branch title.

[sekmiller]

I was planning on having a mini review/preview with Gustavo and Mike sometime today, but Mike is at the UI/UX conference.

[pdurbin]

@sekmiller thanks! I took a quick glance and the code, fetched it locally, and I'm glad to hear the approach is working.