Removed cost views
Merge branch 'develop' of github.com:allegro/ralph into RALPH-1871
Removed cost models
Migration removing the extracost from db
Removed catalog views and models
Migration deleting models related to catalog
Merge branch 'develop' of github.com:allegro/ralph into RALPH-1871
Removed reports
Added search fields for 'service catalog' and 'device environment'.
Merge pull request #1057 from zefciu/RALPH-1871

Removed spurious views
Improved handling of blacklisted serial numbers.
Device's creation shouldn't fail when only sn is blacklisted.
Fix for saving an asset assigned to a discovered device.
flake8
Added 'submodule_name' for 'Scan' view.
Merge pull request #1060 from xor-xor/blacklist

Improved handling of blacklisted serial numbers.
Merge pull request #1058 from xor-xor/search_fields

Added search fields for 'service catalog' and 'device environment'.
Merge pull request #1061 from xor-xor/ralph_1891

Fix for saving an asset assigned to a discovered device.
Merge branch 'synergy' into synergy_to_develop

Conflicts:
	src/ralph/discovery/admin.py
	src/ralph/discovery/models.py
	src/ralph/ui/views/common.py
	src/ralph/ui/views/racks.py
	src/ralph/ui/views/reports.py
Removed unused import.