CheckMails-1.1.3

• Improved Preferences dialog layout
• Added update checker
• Set notification to "No active mailbox" instead of "Checking..."
  when there is no active mailbox.
• Changed package organization (config, images, locale paths) so
  that the installation is neater and also it can be used as a
  portable software (if run locally, the config files are created
  inside the app folder, not in the home directory)
• Created .deb package