Revert "Revert "Store OAuth urls in one place""
Revert "Revert "Store OAuth urls in one place""

This reverts commit 2b5ffd64a7772cc7513709ee0d9911da12356f36.

The original store oauth urls in one place commit caused an issue where we were
unable to store g_id_tokens in our database because it was bigger than the
column allowed. We ran a migration to fix this issue, so I'm reverting the
revert.

jobscore/sync-engine,jobscore/sync-engine,jobscore/sync-engine,jobscore/sync-engine