tr: ts file updated
tr: updating ts file
tests: gui: Data tests: fixing test. Top item cannot be removed
gui: DBDataModel: IdxDataManager: preparations for "Universal" node for all nonmatching photos
main CMakeLists: execute tests after compilation
tests: gui: hiding view related tests in 'view' subdirectory
gui: PhotosDataModel: default argument for parent in constructor
tests: gui: introducing tests for IdxDataManager
tests: gui: code format
gui: removing noexcept keyword as it's useless
tests: gui: preparations for new test
tests: gui: introducing mock for Database::IDatabase
tests: CMakeLists.txt cleanup
tests: gui: mock database: fix for header guard
tests: gui: introducing internal task executor
gui tests: IdxDataManager: including InternalTaskExecutor
gui: comments
tests: gui: hiding internal files in 'test_helpers' directory
tr: update for ts file
code cleanup