Fixed formatting of floating-point numbers in solver monitor

      const int line_width = this->getLineWidth();

      int free = line_width ? line_width : std::numeric_limits<int>::max();

      // FIXME: std::setw sets only minimum width, so free should be adjusted dynamically if more chars are actually written

      std::cout << std::setprecision( 5 );

      std::cout << " ELA:" << std::setw( 8 ) << this->getElapsedTime()

                << " T:"   << std::setw( 8 ) << this->time;

      free -= 24;

      if( this->timeStep > 0 ) {

         std::cout << " TAU:" << std::setw( 5 ) << this->timeStep;

         free -= 10;

         std::cout << " TAU:" << std::setw( 8 ) << this->timeStep;

         free -= 13;

      }

      if( this->stage.length() && free > 5 ) {