Search refactoring to better utilize index and improve capabilities #3077

Job	Run time
Build frontend e2e test image	4m 11s
lint_core	12s
Build backend e2e test image	1m 59s
Build frontend unit test image	1m 7s
Lint mwdb-core web sources	50s
Build mwdb-core core image	3m 7s
Build mwdb-core web image	34s
Perform frontend unit tests	37s
Perform backend e2e tests	4m 2s
Perform frontend e2e tests	3m 29s
Push test images on Docker Hub	0s
Push images on Docker Hub	0s
	20m 8s

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