Reduce vertical height of header image
Reduce vertical height of header image

Increased the width:height ratio, then due to scaling the image is vertically shorter on the webpage. Smaller vertical height lets users have better view of the actual page content under the image.

re #988 (0.5)

victor-lin/npact,victor-lin/npact,NProfileAnalysisComputationalTool/npact,NProfileAnalysisComputationalTool/npact,NProfileAnalysisComputationalTool/npact,victor-lin/npact,NProfileAnalysisComputationalTool/npact,victor-lin/npact,victor-lin/npact,NProfileAnalysisComputationalTool/npact