dashboard/app: allow to gob-encode PerfChange
Currently appspot logs say:
delay: gob encoding failed: gob: type build.PerfChange has no exported fields
And I was thinking why it is not sending mails...

LGTM=adg
R=adg
CC=golang-codereviews
https://golang.org/cl/125480043
3 files changed
tree: 58ebfaf2bb141bb3fb7e90744e80f6077ce86040
  1. app/
  2. builder/
  3. updater/
  4. README