Multiple fixes and improvements

- Added bit more structure to models
- Better error handling in service_v2
- Tiny refactoring
- Fixed test case for service_v2
Identify metatdata submitted by victims
Implementing testing comments
Comment fix. Submission redirect
Remove regex on version/vendor
Revert hash structure to work with admin view. TODO: hadnle this properly
Adding auto comment on hashing completion
Validate autohash requests
Merge branch 'master' of https://github.com/victims/victims-web