Login Manager Settings v2.0

What's new (since v1.1)

Added

• Power settings
• Options to import/export settings in the global menu
• An option to enlarge welcome message

Changed

• Turned main window adaptive
• Turned pop-up dialogs adaptive
• Updated "about" window to the new style
• Improved style of welcome message input field
• Improved support for multiple installations of the app on the same system
• Renamed sidebar section "Miscellaneous" to "Login Screen"
• Renamed global menu option "Import user settings" to "Load session settings"
• The app, now, shows an error notification when trying to apply settings if logo
  is enabled and the chosen logo image does not exist on the system anymore
• Colored command-line output

Fixed

• Developer name in about window not being translated
• Could not change logo image sometimes
• "Apply Current Display Settings" feature not working on some Ubuntu-based systems
• Some text showing up untranslated even if translation existed (fixed by @libreajans in #123)
• Some typos (fixed by @kianmeng in #126)

Full Changelog: v1.1...v2.0