Add ClearInput JS component to asset manifest
Fix error with ClearInput path
Attempt to fix JS load error
Add version number header to each response
Merge pull request #660 from moneyadviceservice/add-version-header

Add version number header to each response
Use a custom matcher for entity attributes

* entities are expected to respond to the accessor for each attribute
* entities shouldn't respond to the attribute setter if it has been marked as
  private (this pattern has emerged in the codebase)