Add relations report command
Small fix
Add sum_price into invoice report
Software Category add link in form
Remove dependency between barcode and niw
Corrected some bugs with licences edit
Add provider field into BackOffice bulkedit form
Show invoice_no on all Assets type search pages
Assign owner only when existing owner is empty
Merge pull request #236 from zefciu/RBM-176

Corrected some bugs with licences edit
Merge pull request #234 from quamilek/link-software-category

Software Category add link in form
Merge pull request #235 from quamilek/dependency-barcode-niw

Remove dependency between barcode and niw
Merge pull request #238 from quamilek/transition-assign-owner

Assign owner only when existing owner is empty
Merge pull request #237 from quamilek/add-columns

Simple modification in columns - bulk/search
Merge pull request #231 from quamilek/relations-report

Add relations report command
Merge pull request #233 from quamilek/sum-tag

Add the ability to display the total amount of the invoice in invoice report
Merge branch 'develop' of https://github.com/allegro/ralph_assets into feature-support
Change models in migration file 0030