RF: social tags checker

[kynrai]

Part of work to parallelise all tests

• remove gock from social tags test as it uses global scope.
• move social tags to checks as part of larger refactor
• remove table tests as fileds were being used as part of logic, complex and unmaintainable in the long run

[codecov]

Codecov Report

Attention: Patch coverage is 74.07407% with 14 lines in your changes missing coverage. Please review.

Flag	Coverage Δ
unittests	49.16% <74.07%> (-0.64%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
handlers/social_tags.go	69.23% <66.66%> (-17.44%)	⬇️
server/server.go	0.00% <0.00%> (ø)
checks/checks.go	0.00% <0.00%> (ø)
checks/social_tags.go	80.85% <80.85%> (ø)

... and 1 file with indirect coverage changes