Pagination. Formatting. Logging and error message improvements.

Fixes #42
Return proper HTTP status codes.

Fixes #45
Log and show CSP errors

Fixes #46
Better logging and error handling.
Pagination labels
Enable CSP reporting support
Admin UI improvements: pagination, automatic reloading.
Merge commit '3464188884412a6f43e50f14de0d7593b5184fa3'

Conflicts:
	sso_frontend/login_frontend/templates/login_frontend/view_log.html