frontend: load all dayResponsibles in one request in Dashboard.vue #3338

Job	Run time
Lint: API (php-cs-fixer)	38s
Lint: ClientPrint (ESLint)	17s
Lint: Frontend (ESLint)	37s
Tests: API	6m 4s
Lint: e2e (ESLint)	26s
Tests: Frontend	2m 36s
Tests: PDF	20s
Tests: Print	59s
Lint: Print (ESLint)	25s
Tests: End-to-end build / Tests: End-to-end (build job)	1m 25s
Tests: End-to-end run / Tests: End-to-end (chrome)	4m 44s
Tests: End-to-end run / Tests: End-to-end (firefox)	4m 43s
Tests: End-to-end run / Tests: End-to-end (edge)	4m 31s
Finish coveralls report	4s
Send out CI success event	0s
	27m 49s

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