Make a separate context for every kind of template

Somehow I felt that it is the way it is supposed to be. A context type
for every kind of template. Will benefit a lot for future work.
Implement copyright metadata

Because I can. Actually I just wanted to check how much pain in ass
would it be to implement it. Surprisingly it wasn't so bad, but it also
could be better.

Also responsive footer content.
Do not enforce base fs, menu always horizontal