Implement Top Five Code Reduction Opportunities

Identify top 5 opportunities to massively reduce the amount of code (lines of code) in any part of the repo: - Similar functionality that can be unified and reused - Code that has been valuable but no more - A front end component or a group of them duplicate another component/page functionality. Use the most modern and nice looking - etc. Now implement them :)

Five reductions, net −11,711 lines: vendored cryptography (−9.1k), PyYAML (−1.9k) and websockets deflate (−0.6k) trimmed to the daemon's import closure, api test factories and daemon helpers unified. Full gate green, PR #5391 merged, Jaah Deploy success. One extra fix: live-cast relay leak the gate exposed. mem-15364 proposed.