Suggest using a path library for joining paths

[JaikrishnaTS]

Mini-ScienceDMZ/pi_setup_files/pi_initial_setup.py

Line 154 in cc11d81

shutil.copy2(base_path + firewall_script_name, firewall_path + firewall_script_name)

os.path.join and pathlib.Path are good choices.

[JaikrishnaTS]

Also at

Mini-ScienceDMZ/log_email/sendStatus.py

Lines 44 to 46 in cc11d81

	path_for_logs.append(current_dir+"/docker_log")
	path_for_backup.append(current_dir+"/docker_log_backup")
	path_for_diff.append(current_dir+"/docker_log_diff")

[kausrini]

Needs extensive restructuring to incorporate the pathlib module to this project. Moving to such an object oriented model is beneficial in the long run.