Adding sääli scraper basics
Implement sääli scraper logic
Add sääli scraper to paging
Merge pull request #335 from njam/scraper-saeli

Add Sääli scraper
Introduce scraper manager
Make scraper sources typed
Pass scraper-manager to run() instead of constructor
Introduce scraper sourc-result model
Store serializable exception in source result
Use source-result in scraper manager
Store source-results in maintenance mode
Add scraper page with result graphs in admin
Add access check to admin page
Make scraper name more human readable