Update About/Credit text in footer

[reefdog]

From @kfogel in #33:

• For the "About / Credit" text at the bottom (I haven't tested this HTML, so please fix as needed):

  <p>This site is a project of <a
  href="https://opentechstrategies.com/" >Open Tech Strategies,
  LLC</a>.  Our thanks to the artists and curators who created and
  continue to build the <a
  href="https://students.colum.edu/deps/wabash-arts-corridor"
  >Wabash Arts Corridor</a> in Chicago.  Please write us at
  info@opentechstrategies.com to suggest changes or improvements
  to this site.</p>
  
  <p>This site is <a href="SEE_BELOW" >free &amp; open source
  software</a>, based on the <a href="https://www.archesproject.org/"
  >Arches</a> heritage data management platform.</p>

  That "SEE_BELOW" link should link to a "/technical-info" page that has the following content:

  <p>This site is free &amp; open source software.  See the <a 
  href="https://github.com/OpenTechStrategies/arches-app-exp"
  >application code</a>, the <a
  href="https://code.librehq.com/ots/arches/arches-demo-data/-/tree/main/wac"
  >data</a>, and our <a
  href="https://code.librehq.com/ots/arches/arches-sites/-/tree/main/ots/wac"
  >data import scripts</a>.  Contributions welcome.</p>

  Did I get all the above URLs right? Please correct if any are wrong, and let me know of course.

[reefdog]

@kfogel Are you wedded to a /technical-info page? It's trivial (and IMO preferable from a user perspective) to include all that info right there in the footer rather than making folks click through.

So I would suggest the following footer:

This site is a project of Open Tech Strategies, LLC. Our thanks to the artists and curators who created and continue to build the Wabash Arts Corridor in Chicago. Please write us at info@opentechstrategies.com to suggest changes or improvements to this site.

This site is free & open source software, based on the Arches heritage data management platform. See the application code, the data, and our data import scripts. Contributions welcome.

[kfogel]

@reefdog I'm fine with that, sure. Thanks!