Handle byte[] and File arguments the same

• Type: Story
• Status: Closed
• Priority: Minor
• Resolution: Discarded
• Affects Version/s: None
• Fix Version/s: None
• Component/s: Web Services, Web Services > JSON WS
• Labels:
  • out-of-scope
• Epic Link: Improve JSON Web Services

Currently it is not possible to send File as argument (mulatipart request) to method that expects `byte[]`. Let's make this possible.