Wrong max component age pre-set for release Maven proxy

When creating a Maven Proxy repository it is set as release type by default. However, max component age is then pre-set to 1440 but should be -1 according to the help text.
I think that the Max component age should be set automatically to the recommended value when selecting either release (-1) or snapshot (1440). Not sure how to handle mixed. If not I suspect that a lot of people will have a not-so-good value here.

• If the user enters a value manually, then changing the version policy should not override a value they've already entered.