Renamed RelayKeywordCommand to RelayKeywordsCommand.
Introduced the new constructor of InClausePredicate.
Implemented the ExecuteAsync(User) method.
Merge branch 'select-bookmarking-articles-command'
Capitalized column names.
Improved some tests not using Thread.Sleep.
Fixed incorrect FindAsync method of UserRepository2.
Fixed not constructing instance of IUnitOfWork.
Addressed ArticleRepository2.
Addressed BookmarkRepository2.
Addressed UserRepository2.
Addressed UserRepository.
Addressed ArticleRepository.
Addressed BookmarkRepository.
Addressed Repository.
Merge branch 'fix-user-id'