Address Some Bullet Warnings / Optimise Mean Request Times

[aaronskiba]

Changes proposed in this PR:

• Address bullet warnings for the following paths:
  • /super_admin/api_clients
  • /public_plans
  • org_admins/plans (Superuser only)

The following table compares the development branch to aaron/bullet-fixes by making requests to the various paths affected by this PR. The benchmarking was performed via ab - Apache HTTP server benchmarking tool alongside an older (May 2024) db dump from the production environment of DMP Assistant. In both cases, 100 consecutive requests were performed to each path and the recorded result is the mean request time (ms).

Example request:

$ ab -n 100 -k -C "_dmp_roadmap_session=COOKIE_VALUE" -l http://127.0.0.1:3000/PATH/TO/PAGE

Path	mean request time (ms) before	mean request time (ms) now	% improvement
/super_admin/api_clients	2901	843	70.9
/public_plans	232	168	27.6
/org_admin/plans (as super_admin type user)	269	190	29.4

[github-actions[bot]]

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