Drop name filtering for project searches

`projectSearch` is exactly for one name, and the name is not a
wildcard. So the only result has to be the correct one and the
filtering is unnecessary and we drop it. With this dropping, all the
attachments in searching become unnecessary, which we clean up in
follow-up commits.

Change-Id: I66cf84e16bcc283f241a643f9b34c7f1bfbce907