chat

add id to drop-message
Merge branch 'ValikBranch' of https://github.com/DzianisPasiukou/ProjectForEpam into VladBranch
messages count to loginpartial and signalR script
Merge branch 'ValikBranch' of https://github.com/DzianisPasiukou/ProjectForEpam into VladBranch

Conflicts:
	MvcApp/Scripts/SignalR/addMessages.js
	MvcApp/Scripts/myScripts/Chat.js
	MvcApp/Views/Shared/_LoginPartial.cshtml
add signalR to message controller
Merge branch 'ValikBranch' of https://github.com/DzianisPasiukou/ProjectForEpam into VladBranch

Conflicts:
	EpamProject.v12.suo
	MvcApp/Views/Shared/_Layout.cshtml
	MvcApp/bin/LogicLayer.dll
	MvcApp/bin/MvcApp.dll
add ChatHelper (+IChatHelper)

resolve into UnityConfig
Dependency Injection for Hubs
review MessageHub, SecurityHelper, ISecurityHelper, MessageController
review
Add UsersInfo grid and checkbox update
Merge branch 'VladBranch' of https://github.com/DzianisPasiukou/ProjectForEpam into MyBranch