ViewModel.DoCancel() performace fix.

DoCancel() on ViewModel with over 1000 EditableBO was very slow. About
20-40 secs due to many ChildChanged events.
Closes #78 Method SerializationInfo.AddValue made public
Closes #80 Add Russian localization for Business Rule messages
Merge pull request #81 from inickvel/Localization

Closes #80 Add Russian localization for Business Rule messages
Merge pull request #79 from inickvel/SerializationInfo

Closes #78 Method SerializationInfo.AddValue made public
Merge pull request #77 from inickvel/ViewModel-Performance

ViewModel.DoCancel() performace fix.
Merge pull request #85 from rockfordlhotka/master

Update code with changes made while 4.5.20 was pending
Fixed SmartDate ctor for DateTime?

The bug was with ctor of SmartDates passing in a null DateTime? with
EmptyValue set to MaxValue. It was always setting the Date to MinValue.
Merge pull request #88 from BradRem/master

Bug with SmartDate ctor and nullable DateTimes fixed
Merge pull request #92 from rockfordlhotka/master

Closes #74 Properly implement SaveAsync in collections
Merge pull request #93 from rockfordlhotka/master

Closes #69 Add ICslaPrincipal interface
Merge pull request #94 from rockfordlhotka/master

Closes #91 Allow use of custom activator for child objects
Merge pull request #7 from MarimerLLC/master

Update local master with changes to origin