use blue creating screen for new projects; revised alert text for copy, remix; saving messages don't dismiss alerts

I do not like how the alert component is hyper specialized for two distinct use cases. It would be much better to refactor the alerts so that the alerter can just fill the alert with whatever they want. But I do not feel comfortable making that refactor because I know ben and evelyn have gone back and forth about these alerts.

made alert messages translation-ready
updated project saver hoc
default alerts to COLOR_ORANGE

got tests working

made neutral button color