How to debug custom alert handler:
1. Create wsp using latest source code
2. Update CustomAlertHandler.wsp via PowerShell
3. Restart Sharepoint Timer Service (owstimer.exe)
4. Attach CustomAlertHandler to OWSTimer process and add breakpoint to OnNotification method
5. Go to condo site on Windows zone and activate alerts
6. Add user to Registered tenants, Registered owners or Hallitus condo groups - depending on what should be tested
7. Go to condo list/doclib where alerts have been added (full list of them may be found on Manage alerts page)
8. Add new item/document to this list
9. Go to Central administration > Monitoring > Job definitions > Immediate alerts (for correct web app) > Run
10. Breakpoint should be hit in debugger