[WIP] views refactoring
[WIP] clened
[WIP] fixing flake errors
[WIP] changed order
fixed flake errors
Merge branch 'develop' into debt/234-split-views

Conflicts:
	src/ralph_assets/views/invoice_report.py
	src/ralph_assets/views/transition.py
added budget_info field to license
small code cleanups
added budget_info field to (DC|BO)(add|edit|search)(device|part)
fixed search by budget_info field (assets)
speed up licence admin view
Hotfix - slots field is not shown when model category attribute ``is_blade`` is True
added search 'by text' to budget_info instead of 'by id'
Merge branch 'develop' into budget-info
small changes after review
more than pep8
small changes after review
Merge branch 'debt/234-split-views' of github.com:ar4s/ralph_assets into debt/234-split-views

Conflicts:
	src/ralph_assets/views/asset.py
data_import instead of xls_import
Merge pull request #311 from ar4s/feature/raw-fields-in-licence-admin

Speed up licence admin view