Fixed various issues reported by resharper. Added move constructors/move assignment operators to various classes. Exceptions cleanups. Removed unused code. Removed copy constructors/copy assignments from various noncopyable classes. (CH-318).
Switched row data handling to not use shared pointers nor RowData object to pass information (optimization to slim down the serialization cost) (CH-103).
Adding/retrieving rows (to be serialized) now uses a single method instead of two allowing for simpler code at caller's plase (also a preparation for replacing smart pointer with a reference to real object) (CH-103).