Dgraph v1.0.x: Mutations are not committed

[danielmai]

Mutations sent when connecting to a Dgraph v1.0.x cluster are not committed.

Steps to reproduce:

1. Run a Dgraph cluster running v1.0.x.
2. Run a mutation in the Mutate tab. There's no "commit" message in the mutation response.

[danielmai]

The network request for the mutation ran /mutate?commitNow=true. In Dgraph v1.0.x, CommitNow should be set with the header X-Dgraph-CommitNow: true.

[paulftw]

Fixed in 30412fa