After updating the "Project" column name to "Repo", there were still
references to the former name in the change_table preference, which
controls what columns appear in the change table. Because, following the
rename, preferences would have an outdated key, this had the unintended
effect of hiding the repo column by default for any user who had
modified that preference.
With this change, the appearance of "Project" in a change_table list is
treated like an appearance of "Repo".
Bug: Issue 9509
Change-Id: I1e773b5dd07dd086551f62aacbbe5973078e9ee4