Change fancybox gallery name

[iaraota]

This PR updates the Fancybox initialization by changing the data-fancybox attribute from "gallery" to "summary." This modification tailors Fancybox specifically for Summary Pages, introducing new date navigation buttons within the gallery. These buttons allow users to easily switch between different dates. This PR is linked to the associated changes in gwbootstrap PR#63

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 49.27%. Comparing base (720bd0c) to head (a7326f2).
Report is 13 commits behind head on master.

Files	Patch %	Lines
gwsumm/tabs/builtin.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #415      +/-   ##
==========================================
- Coverage   49.64%   49.27%   -0.38%     
==========================================
  Files          60       60              
  Lines        8823     8789      -34     
==========================================
- Hits         4380     4330      -50     
- Misses       4443     4459      +16     

Flag	Coverage Δ
Linux	49.27% <0.00%> (-0.38%)	⬇️
macOS	49.27% <0.00%> (?)
python3.10	49.27% <0.00%> (-0.38%)	⬇️
python3.11	49.27% <0.00%> (-0.38%)	⬇️
python3.9	49.27% <0.00%> (-0.37%)	⬇️

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