Metropolis does not load anymore in feature/masterpages

[Bjoern Michaelsen]

Hi Astron, all,

I jsut removed BrightBlue and Progress in feature/masterpages and rechecked the
result with a clean build and found that Metropolis does not load anymore as a
masterpage, although it worked before. I suspect:

> commit dca9b3b9790fd4c29d17f0ab634f3ef001d7458c
> Author: Stefan Knorr (astron) <heinzlesspam at gmail.com>
> 
>     Modify Metropolis template

to have to do with it.

@Astron: Could you redo the steps you did there in an installation and see
which one broke the loading as a masterpage?

In the end, if we find out what the trouble with BrightBlue is this might
actually be good.

Best,

Bjoern