[#130] QA: Fix Code Smells Detected by Sonarqube

administration/choices.py

administration/forms.py

administration/templates/administration/data_statistik.html

administration/templates/kelola_kontributor.html

administration/templates/laporan_materi.html

administration/templates/setting_verifikasi.html

administration/templates/verif.html

administration/views.py

app/forms.py

app/management/commands/generatedummy.py

register/templates/index.html

register/templates/index_umum.html

register/tests.py

register/urls.py

register/views.py