Search refactoring to better utilize index and improve capabilities #3047

Job	Run time
lint_core	14s
Build frontend unit test image	1m 7s
Build backend e2e test image	1m 58s
Build frontend e2e test image	3m 16s
Lint mwdb-core web sources	55s
Build mwdb-core core image	3m 20s
Build mwdb-core web image	50s
Perform frontend unit tests	31s
Perform backend e2e tests	5m 4s
Perform frontend e2e tests	3m 50s
Push test images on Docker Hub	0s
Push images on Docker Hub	0s
	21m 5s

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