Add status badges for Ubuntu builds and WMF builds

[sergey-s-betke]

I can't show build status for Ubuntu and WMF5 builds separately. Please, add status badge parameters (image=Ubuntu for example).

https://github.com/Metrolog/marks

[IlyaFinkelshteyn]

Separate status pages will be added as long as we close #1805