[Icons] Lower glossiness, less fat and other icon love
[Icons] project-32.png, solution-32.png and workspace-32.png
[Icons] project-console-32.png → project-console-overlay-32.png (and a new icon)
[Icons] project-library-32.png → project-library-overlay-32.png (and a new icon)
[Icons] web-overlay-32.png → project-web-overlay-32.png (and a new icon)
[Icons] md-addins bump