Test change.
Revert "Test change."

This reverts commit 3d42ed1446283822eead4deb99f68e016a240366.
Base solution structure arranged.
BulkDataLoader: Entities parsers added.
-- User-, Movie- and RatingRecordParsers implemented;
-- Tests for parsers added.
New gitignore file created.
Gitignore updated.

-- old gitignore removed;
-- new gitignore updated.
BulkDataLoader console app draft implemented.

-- console app draft implemented;
-- Core.DataAccess project added;
-- Core.DataAccess: BulkDataLoader-related interfaces added; mock implementations added.
BulkDataLoader Tool implemented.

-- Neo4jClient added to DAL;
-- Unity DI infrastructure added;
-- Basic entity-DataManagers' functionality implemented;
-- BulkDataLoader console app implemented.
Unintended commenting fixed.
BulkDataLoader refactored.

-- Shared project added;
-- Abstract CompositeUnityRegistry introduced;
-- BulkDataLoader refactored.
BulkDataLoader performance improved.

-- nodes loading boosted in 7000 times;
-- relations loading boosted in 1.5 times.
BulkDataLoader refactored.

-- BulkDataLoader: batch operations moved to separate DAL library;
-- Core.DataAccess.UnityConfiguration renamed to *.Unity.
StyleCop issues fixed.

-- StyleCop issues fixed;
-- BulkDataLoader "target platform" switched to AnyCPU.