refactor(test): Improve UI test stability and maintainability #1909

Job	Run time
Build (Unit-tests & Android-Lint)	27m 22s
Android UI-tests on emulator (25, default)	12m 23s
Android UI-tests on emulator (28, default)	21m 28s
Android UI-tests on emulator (23, default)	24m 15s
Android UI-tests on emulator (24, default)	24m 18s
Android UI-tests on emulator (26, default)	22m 3s
Android UI-tests on emulator (29, default)	26m 58s
Android UI-tests on emulator (32, default)	23m 58s
Android UI-tests on emulator (27, default)	25m 56s
Android UI-tests on emulator (30, default)	22m 29s
Android UI-tests on emulator (33, default)	20m 0s
Android UI-tests on emulator (36, default)	23m 32s
Android UI-tests on emulator (34, default)	24m 48s
Android UI-tests on emulator (35, default)	29m 23s
Android UI-tests on emulator (31, default)	23m 55s
Build (Unit-tests & Android-Lint)	4h 8m 49s
Android UI-tests on emulator (31, default)	8m 36s
Android UI-tests on emulator (24, default)	24m 18s
Android UI-tests on emulator (32, default)	10m 10s
Android UI-tests on emulator (35, default)	9m 3s
Android UI-tests on emulator (25, default)	5m 48s
Android UI-tests on emulator (26, default)	22m 3s
Android UI-tests on emulator (30, default)	22m 29s
Android UI-tests on emulator (36, default)	23m 32s
Android UI-tests on emulator (34, default)	24m 48s
Android UI-tests on emulator (33, default)	20m 0s
Android UI-tests on emulator (27, default)	25m 56s
Android UI-tests on emulator (29, default)	26m 58s
Android UI-tests on emulator (28, default)	21m 28s
Android UI-tests on emulator (23, default)	24m 15s
	14h 31m 1s

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