Update changelog and change version

- Updated changelog
- Changed version
Merge branch 'develop' of https://github.com/allegro/ralph_assets into develop
Not yet working
Migration added
Fixed line broken by merge
Models and forms for licence - initial version
Licence form is here
Licence form functional
Software categories are bound to bo or dc
Corrections
Simple list added
URLs in table
Removed blank lines
Removed initial_data
Merge pull request #116 from zefciu/RALPH-1587

SAM(well Tarly) - the add and edit of licences
Merge branch 'develop' into imei-field-ver2
moved imei from OfficeForm to Base(Add|Edit)AssetForm
moved *imei* field to Base(Add|Edit)AssetForm (instead of OfficeInfo)
added category-imei fields dependency
deleted code cleanups