added small logo
Added IAsyncPhotoProcessor interface.
fixed error in HomeController
New CryptoProviderTest method added. Now part of CryptoProvider in RandomStringGenerator class.
Merge branch 'master' of https://github.com/ArtemZag/academy13
refactoring
fix naming
added new test for CryptoProvider
hot fix and refactroing
Added base structure to socials networks
Added Facebook SDK package
Added Facebook as a Auth Provider Type
Refactoring: now Randomizer is a static class
FIX: correct links from social buttons
Added: overloaded method for IsUserExist
Added base structure of socials util classes
Added SignIN and SignUp from facebook(need refactoring)
Merge branch 'maaak' of https://github.com/ArtemZag/academy13 into maaak

Conflicts:
	BinaryStudio.PhotoGallery.Core/BinaryStudio.PhotoGallery.Core.csproj
	BinaryStudio.PhotoGallery.Core/SocialNetworkUtils/Facebook/Facebook.cs
	BinaryStudio.PhotoGallery.Web/Controllers/AccountController.cs
HOTFIX
Refactoring FB signIN