Add concept scheme to embedded concepts #295

[sroertgen]

The concept scheme was not yet added to the embedded concepts for hash uris. If visiting a hash uri concept scheme directly this resulted in a crash.

Will deploy this to test system after #293 #294 are merged.

[sroertgen]

Merged into dev for testing

How to test:

• use a hash uri concept scheme
• build the vocab
• visit the concept scheme

if it's not crashing it's working.

[acka47]

It's not crashing but it also looks different than the non #scheme URL. Compare:

• https://test.skohub.io/acka47/testing-skohub-vocabs/heads/master/nwbib.de/subjects.html
• https://test.skohub.io/acka47/testing-skohub-vocabs/heads/master/nwbib.de/subjects.html#scheme

In the second case there is another box around the concept scheme description:

[sroertgen]

@acka47 Good catch, like always!

I aligned the design and pushed the changes to the test container. Please test again.