Fix crontab file and improve notify_keywords logging

Merge pull request #253 from eaudeweb/fix-cron

Fix crontab file and improve logging for notify_keywords

Remove concurrency and improve logging

Merge pull request #252 from eaudeweb/debug

Small fixes + improved logging/debugging

UNGM fixes and logging

Fix UNGM parser and add logging to investigate unresolved problems.

Add admin actions and stop accepting empty tenders

• Add admin actions to turn notifications on and off for email adresses
• Raise exception when an empty tender is parsed from a UNGM page

Add created_at/updated_at timestamps to all models

Merge pull request #248 from eaudeweb/timestamps

Add timestamps to all models

Refactor Notification to EmailAddress

Renames Notification to EmailAddress and add notify field (default=True) and admin action to turn off notifications.

Fix repeated emails for the same tenders

Merge pull request #245 from eaudeweb/fix-duplicates

Fix repeated emails about the same tenders

Fix 550 (No such file or directory) errors

Merge pull request #242 from eaudeweb/fix-no-dir

Skip directories that don't exist

Fix UNGM parser

Merge pull request #240 from eaudeweb/fix-ungm

Fix ungm

v1.0.14

Merge pull request #230 from eaudeweb/229_fix_elasticq_variable

Fix elasticQ variable #229