Sergei-Levshnia/homework: Nix-study-course homeworks @ hw18-saga-implement

miskson 2bd6ed7448 'blue belt' task remade to function recursively		3 lat temu
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index.html	5897231cdf hw5 all tasks till 'HTML optional fields' done	3 lat temu
script.js	2bd6ed7448 'blue belt' task remade to function recursively	3 lat temu