use mut ref when setting start page for HomeAndSettings #492

Job	Run time
Run static analysis for cargo-ledger	1m 28s
Build SDK (nanos)	2m 14s
Check code formatting	1m 8s
Build SDK (nanox)	2m 16s
Build SDK (nanosplus)	2m 14s
Build SDK (stax)	2m 23s
Build SDK	1m 36s
Build SDK (flex)	2m 23s
Run static analysis (nanos, include_gif)	1m 24s
Run static analysis (nanos, testmacro)	1m 13s
Run unit and integration tests (nanos)	2m 26s
Run static analysis (nanos, ledger_secure_sdk_sys)	1m 57s
Run unit and integration tests (nanox)	2m 32s
Run static analysis (nanos, ledger_device_sdk)	2m 18s
Run unit and integration tests (nanosplus)	2m 29s
Run unit and integration tests (stax)	2m 44s
Run static analysis (nanox, include_gif)	1m 21s
Run unit and integration tests (flex)	2m 37s
Run static analysis (nanox, testmacro)	1m 15s
Run static analysis (nanox, ledger_secure_sdk_sys)	1m 51s
Run static analysis (nanox, ledger_device_sdk)	2m 12s
Run static analysis (nanosplus, include_gif)	1m 25s
Run static analysis (nanosplus, testmacro)	1m 14s
Run static analysis (nanosplus, ledger_secure_sdk_sys)	1m 53s
Run static analysis (nanosplus, ledger_device_sdk)	2m 19s
Run static analysis (stax, include_gif)	1m 25s
Run static analysis (stax, testmacro)	1m 14s
Run static analysis (stax, ledger_secure_sdk_sys)	1m 58s
Run static analysis (stax, ledger_device_sdk)	2m 25s
Run static analysis (flex, include_gif)	1m 22s
Run static analysis (flex, testmacro)	1m 18s
Run static analysis (flex, ledger_secure_sdk_sys)	1m 52s
Run static analysis (flex, ledger_device_sdk)	2m 19s
	1h 2m 45s

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