Refresh webfinger (#1323)

* Refresh local info for remote accounts when webfinger returns new values

It only refreshes account info if one of the URLs or the public-key changes,
in which cases it refreshes the full info, re-downloading the feeds from that
user.

Some special handling should probably be done when the public key changes,
but I have been unable to find any use for it in Mastodon yet.

* Re-fetch remote users we aren't subscribed to.

This might induce performance issues, we might want to only do that for users
we explicitly attempted to subscribe but failed to.

* Refactor changes

* Do not refresh existing remote account details more than once a day

* Avoid re-fetching webfinger info in tests unless otherwise specified

1 files changed, 5 insertions, 0 deletions

diff --git a/db/migrate/20170409170753_add_last_webfingered_at_to_accounts.rb b/db/migrate/20170409170753_add_last_webfingered_at_to_accounts.rb
new file mode 100644
index 000000000..08c916fe2
--- /dev/null
+++ b/db/migrate/20170409170753_add_last_webfingered_at_to_accounts.rb
@@ -0,0 +1,5 @@
+class AddLastWebfingeredAtToAccounts < ActiveRecord::Migration[5.0]
+  def change
+    add_column :accounts, :last_webfingered_at, :datetime
+  end
+end