Main page.

Interface.
Table with statistics.
Changing stadium and matches.
Added error page
Added new shared layout HomeLayout.cshtml.

+Refactoring
Changed main dbcontext constructor. Link to default connection string.
Merge branch 'origin/Ivnst-master'
Merge branch 'origin/master'

Conflicts:
	DATS_Solution/DATS.csproj
	DATS_Solution/DB/IRepository.cs
	DATS_Solution/DB/Partials/SqlRep-Matches.cs
	DATS_Solution/DB/Partials/SqlRep-Stadiums.cs
Merge branch 'origin/os-master'

Conflicts:
	DATS_Solution/DB/IRepository.cs