[Fix #1008] Make ASRSnippet.status read-only when creating object.
[Fix #1008] Make ASRSnippet.status read-only when creating object.

mozmar/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service,mozmar/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service,glogiotatidis/snippets-service,glogiotatidis/snippets-service