added basic functionality
spaces instead of tabs
added ``NOTIFICATIONS_`` prefix
added docstring
added documentation
Merge pull request #990 from ar4s/338-notification-module

Added notifications module
Display assigned supports in asset info page
Merge pull request #993 from quamilek/feature/supports-in-asset-page

Display assigned supports in asset info page
Improved 'DNS Records' form validation (detection of duplicate records).
flake8
log auth errors in ilo_hp plugin
Merge pull request #998 from andrzej-jankowski/ilo

[Scan] ilo_hp - log auth errors
Code review fix.
Merge pull request #997 from xor-xor/ralph_1813

Improved 'DNS Records' form validation (detection of duplicate records).
Merge remote-tracking branch 'remotes/allegro/synergy' into synergy
create device form - asset is required for specific model types
Service and Device environment added to deployment form.
mass deployment - now you can specify asset by sn or barcode
tests file added
asset is required - in progress