Limiting the number of secondary seeds

[crarugal]

This ACT record cannot be accessed (504 Gateway Time-out); this is because this target has many secondary seeds.
https://www.webarchive.org.uk/act/targets/138705

It has 480 secondary seeds; perhaps we should limit the number of secondary seeds.

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id	url	created_at	title	author_id	professional_judgement	depth	ignore_robots_txt	crawl_frequency	crawl_start_date	crawl_end_date	license_status	updated_at
138705	act-8873953430350088168	30 April 2021	Candidates standing for Constituencies on Facebook #1	36	TRUE	CAPPED	TRUE	DAILY	01 May 2021	15 May 2021	NOT_INITIATED	30 April 2021