Added:
- list all active devices (with sn, barcode, venture, role, remarks)
- list all deleted devices
- export to csv devices
Added:
- list all active devices (with sn, barcode, venture, role, remarks)
- list all deleted devices
- export to csv devices
Merge branch 'master' of git://github.com/allegro/ralph into dev-list

Conflicts:
	src/ralph/ui/static/ui/custom.css
	src/ralph/ui/views/reports.py
fix comment
remove important
Fixed incorrect handling of AttributeError on reports. component_type was not set.
remove empty class
reg comment
Avoid using too much memory in device cache update
Make the mac address unique in dhcp entries (REQUIRES MANUAL CLEANUP!)
Impact report - changed alghoritm of detecting affected CIs. Improved performance by margin 10x. Removed one of the unused charts
Merge branch 'master' of github.com:deshipu/ralph
Merge github.com:allegro/ralph
Fix the count of "devices now" in the ventures report
Refactoring & fixes
Fix splunk usage plugin with concurrent_get_or_create
Add inlines for storage in device admin
Add "fill" button to move form, sort networks dropdown
Check for duplicate hostnames and ips in server move form
Allow moving servers by mac if it's in DHCP