Improve PSP system dialogs' looks.
Format date according to configurations.
Swap positions of button tips.
Fix text wrapping with non-top-left text alignment.
Auto-height the "borders" of the message text area.
More dialog tweaks.
Unify some common elements of dialogs.
Now the icon is missing.
Merge pull request #2191 from aquanull/PSPDialog

Psp dialog improvements