Merge pull request #6209 from RosettaCommons/roccomoretti/interactive_login_enter
[Foldit] Fix issue with enter on login screen
Alter the Login Dialog such that it only focuses on the password by default if there's no text there. Also adjust things such that we don't trigger the "password edited" flag if someone happens to hit enter when in the password field (if we still have the default jwt placeholder.)
Also, fix the splash screen such that pressing enter triggers the play online.
RELEASE NOTES: Fix login dialog such that pressing enter doesn't result in an invalid password.