Improvements:

        . Keil project import:
          - added uvprojx support
          - don't include assembly file in the build process anymore.
          - improvement of the algorithm used to guess the device name.

        Fixes:

        . Don't reload anymore previous project when opening a new project with
          a double click.
        . Code View display on 1 column wasn't properly refreshed when no more
          symbols to display.