reverted deleted nuget files
added server validation
added SessionRepository
added form authorization

removed  predefinded authorization, registration and external authorization
Added file sessionRepository.cs
fixed messages in bonuses controller
added wide date filter,
fixed session bug
fixed create instead edit grid's bug
some small mark up fixes
somehow fixed 405 and 500 errors on IIS
Merge from develop to master.
added textarea, yes\no values for IsActive column, date validator
fixed empty name after update operation
deleted some obsolete classes and methods
Fixed problem with Error handling by IIS
fixed incorrect date conversation on update\create
refactoring made
Ajax Error filter added
merge from develop.
90% done