Pre-merge Cosmetic changes

.gitignore

src/analytics/backend/requirements.in

src/analytics/frontend/__init__.py

src/analytics/frontend/client/AnalyticsFrontendClient.py

src/analytics/frontend/requirements.in

src/analytics/frontend/service/AnalyticsFrontendService.py

src/analytics/frontend/service/__init__.py

src/analytics/frontend/tests/__init__.py

src/analytics/requirements.in

src/analytics/tests/__init__.py

src/kpi_manager/database/KpiEngine.py