arch_draft.py:4-10: Implement the new arch at the search...

[0pdd]

The puzzle 331-cd71fc19 from #331 has to be resolved:

refarm-site/search/arch_draft.py

Lines 4 to 10 in 77f71d0

	@todo #331:60m Implement the new arch at the search app.
	All you need is to implement ContextsStack class
	and place the other classes to the relevant places.
	`search.search` module will be fully rewritten.
	You also can drop away starting_by_term functionality.
	See "is_name_start_by_term" aggregation parameter
	inside search.search.search function.

The puzzle was created by @duker33 on 31-May-19.

Estimate: 60 minutes, role: DEV.

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