Create branch commit.
Test commit
Merge branch 'Slava' of https://github.com/VadzimBura/GroupProject into Slava
Added validation for domain models and dal models.
Added check on empty string to validation attributes.
Add register view, layout and two view models.
Merge branch 'Vika' of https://github.com/VadzimBura/GroupProject into Slava
Changed project files
Package config
Merge branch 'Vadzim' into Slava

Conflicts:
	FileExchange/FileExchange.BLL/FileExchange.BLL.csproj
	FileExchange/FileExchange.Common/IoC.cs
	FileExchange/FileExchange.DAL/Entities/Comment.cs
	FileExchange/FileExchange.DAL/Entities/File.cs
	FileExchange/FileExchange.DAL/Entities/News.cs
	FileExchange/FileExchange.DAL/Entities/Tag.cs
	FileExchange/FileExchange.DAL/Entities/User.cs
Merge branch 'Slava'
Merge with Slava branch