Eradicate random bugs

Recent ones:

Linux

line 80, in test_rename_readonly_file
line 91, in test_rename_readonly_file
=> fixed by NXDRIVE-170: Handle race condition between local_watcher and processor

line 149, in test_move_and_copy_paste_folder_original_location

line 222, in test_watchdog_encoding
=> should be fixed by NXDRIVE-504

line 72, in test_trash_file_then_parent

test_untrash_file_on_delete_parent

test_remote_rename_update_content_file

OS X

line 522, in test_synchronize_deep_folders
=> should be fixed by recent test refactoring within NXDRIVE-170

line 154, in test_synchronize_local_filter_with_move

line 64, in test_synchronize_denying_read_access
=> fixed by NXDRIVE-170: Handle race condition between local_watcher and processor

line 149, in test_move_and_copy_paste_folder_original_location

line 56, in test_move_and_copy_paste_folder_original_location_from_child

line 58, in test_binding_initialization_and_first_sync
=> should be fixed by recent test refactoring within NXDRIVE-170

line 91, in test_rename_readonly_file
=> fixed by NXDRIVE-170: Handle race condition between local_watcher and processor

line 69, in test_synchronize_remote_deletion

line 38, in test_dedup_multiple_files

line 191, in test_local_rename_file_uppercase

Windows

line 29, in test_versioning
=> fixed by NXDRIVE-170: Fix randomly failing test_versioning at line 33