added carousel to funder/contributor landing page

[thelostone-mc]

Description

• added carousel to both funder + contributor landing page
• DRY-ed code
• responsive design

closes #2282
closes #2283

[codecov]

Codecov Report

Merging #4046 into master will decrease coverage by <.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #4046      +/-   ##
==========================================
- Coverage   30.19%   30.19%   -0.01%     
==========================================
  Files         205      205              
  Lines       16085    16087       +2     
  Branches     2123     2123              
==========================================
  Hits         4857     4857              
- Misses      11054    11056       +2     
  Partials      174      174

Impacted Files	Coverage Δ
app/retail/views.py	29.39% <0%> (-0.2%)	⬇️

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[codecov]

Codecov Report

Merging #4046 into master will decrease coverage by <.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #4046      +/-   ##
==========================================
- Coverage   30.19%   30.19%   -0.01%     
==========================================
  Files         205      205              
  Lines       16148    16150       +2     
  Branches     2129     2129              
==========================================
  Hits         4876     4876              
- Misses      11098    11100       +2     
  Partials      174      174

Impacted Files	Coverage Δ
app/retail/views.py	29.39% <0%> (-0.2%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 5ca2520...9d1788b. Read the comment docs.