Return 204 No Content on DELETE /projects/*/description

When a description is deleted the key is removed from the
configuration file. Callers should expect a 204 response.

For any PUT response return the same as GET, which is ""
instead of the literal word "null" if there is no text
after the put is complete.

Change-Id: I2ba174d1129a14d862c2b26da5eb8bebc0671f63
2 files changed