Merge pull request #4281
5c97aae qt: Unify AboutDialog and HelpMessageDialog (Wladimir J. van der Laan)
45615af Add 'about' information to -version output (Wladimir J. van der Laan)
97789d3 util: Add function FormatParagraph to format paragraph to fixed-width (Wladimir J. van der Laan)
96b733e Add -version option to get just the version (Wladimir J. van der Laan)