added adding license to asset in 'edit device' forms
fixed license to user bug (reverse url)
fixed license to user bug (reverse url)
Merge branch 'add-license-to-asset' of github.com:xliiv/ralph_assets into add-license-to-asset

Conflicts:
	src/ralph_assets/views.py
Merge pull request #192 from xliiv/add-license-to-asset

Added adding licenses to asset in 'edit device' forms (BO & DC)