Release 1.1.1

This is a minor release to fix some issues and make few changes. Note only that for security reasons we have changed the internal key (it will remains the same since this release). This is a list of changes:
- improved software context menu
- improved software traybar menu
- changed internal key to encrypt passwords *
- fixed bug that permitted to save blank password
- fixed minor bugs
[* it means that previous passwords are not compatible]