depreciation warning removed

this commit removes depreciation warning pointed in issue https://github.com/GreatDevelopers/LibreHatti/issues/164
Update forms.py
Removed Static URLs. Used Reverse
Removed static URL
Rewriting ProductItemInline
JS reverse Lookup done

The jsreverse function has been created which acts just like the django reverse function.
ProductItemInline refactoring has been started.
Modified
distribution done
Merge pull request #167 from aseemmittal/dirty

distribution done
Merge pull request #166 from piyushparkash/staticurl

Removed Static URL
Revert "Removed Static URL"
Merge pull request #168 from GreatDevelopers/revert-166-staticurl

Revert "Removed Static URL"