chore(tests): refactor acceptance tests #1780

Job	Run time
acceptance-tests-firefox (8.3, firefox, bootstrap3-banner)	2m 26s
acceptance-tests (8.1, chrome, bootstrap3-banner)	2m 58s
acceptance-tests-firefox (8.3, firefox, bootstrap3-modal)	2m 37s
acceptance-tests (8.1, chrome, bootstrap3-modal)	2m 38s
acceptance-tests-firefox (8.3, firefox, bootstrap4-modal)	3m 35s
acceptance-tests-firefox (8.3, firefox, bootstrap5-modal)	2m 48s
acceptance-tests-firefox (8.3, firefox, customtheme)	2m 44s
acceptance-tests (8.1, chrome, bootstrap4-modal)	2m 55s
acceptance-tests (8.1, chrome, bootstrap5-modal)	2m 25s
acceptance-tests (8.1, chrome, customtheme)	2m 26s
acceptance-tests (8.2, chrome, bootstrap3-banner)	2m 48s
acceptance-tests (8.2, chrome, bootstrap3-modal)	2m 30s
acceptance-tests (8.2, chrome, bootstrap4-modal)	2m 26s
acceptance-tests (8.2, chrome, bootstrap5-modal)	3m 2s
acceptance-tests (8.2, chrome, customtheme)	2m 34s
acceptance-tests (8.3, chrome, bootstrap3-banner)	2m 37s
acceptance-tests (8.3, chrome, bootstrap3-modal)	2m 50s
acceptance-tests (8.3, chrome, bootstrap4-modal)	2m 35s
acceptance-tests (8.3, chrome, bootstrap5-modal)	2m 54s
acceptance-tests (8.3, chrome, customtheme)	2m 38s
	54m 26s

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