Add Keybase integration (#10297)

* create account_identity_proofs table

* add endpoint for keybase to check local proofs

* add async task to update validity and liveness of proofs from keybase

* first pass keybase proof CRUD

* second pass keybase proof creation

* clean up proof list and add badges

* add avatar url to keybase api

* Always highlight the “Identity Proofs” navigation item when interacting with proofs.

* Update translations.

* Add profile URL.

* Reorder proofs.

* Add proofs to bio.

* Update settings/identity_proofs front-end.

* Use `link_to`.

* Only encode query params if they exist.

URLs without params had a trailing `?`.

* Only show live proofs.

* change valid to active in proof list and update liveness before displaying

* minor fixes

* add keybase config at well-known path

* extremely naive feature flagging off the identity proof UI

* fixes for rubocop

* make identity proofs page resilient to potential keybase issues

* normalize i18n

* tweaks for brakeman

* remove two unused translations

* cleanup and add more localizations

* make keybase_contacts an admin setting

* fix ExternalProofService my_domain

* use Addressable::URI in identity proofs

* use active model serializer for keybase proof config

* more cleanup of keybase proof config

* rename proof is_valid and is_live to proof_valid and proof_live

* cleanup

* assorted tweaks for more robust communication with keybase

* Clean up

* Small fixes

* Display verified identity identically to verified links

* Clean up unused CSS

* Add caching for Keybase avatar URLs

* Remove keybase_contacts setting

2 files changed, 30 insertions, 0 deletions

diff --git a/db/migrate/20190316190352_create_account_identity_proofs.rb b/db/migrate/20190316190352_create_account_identity_proofs.rb
new file mode 100644
index 000000000..ddcbce3f3
--- /dev/null
+++ b/db/migrate/20190316190352_create_account_identity_proofs.rb
@@ -0,0 +1,16 @@
+class CreateAccountIdentityProofs < ActiveRecord::Migration[5.2]
+  def change
+    create_table :account_identity_proofs do |t|
+      t.belongs_to :account, foreign_key: { on_delete: :cascade }
+      t.string :provider, null: false, default: ''
+      t.string :provider_username, null: false, default: ''
+      t.text :token, null: false, default: ''
+      t.boolean :verified, null: false, default: false
+      t.boolean :live, null: false, default: false
+
+      t.timestamps null: false
+    end
+
+    add_index :account_identity_proofs, [:account_id, :provider, :provider_username], unique: true, name: :index_account_proofs_on_account_and_provider_and_username
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 790e347c3..11535d867 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -36,6 +36,19 @@ ActiveRecord::Schema.define(version: 2019_03_17_135723) do
     t.index ["account_id", "domain"], name: "index_account_domain_blocks_on_account_id_and_domain", unique: true
   end
 
+  create_table "account_identity_proofs", force: :cascade do |t|
+    t.bigint "account_id"
+    t.string "provider", default: "", null: false
+    t.string "provider_username", default: "", null: false
+    t.text "token", default: "", null: false
+    t.boolean "verified", default: false, null: false
+    t.boolean "live", default: false, null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["account_id", "provider", "provider_username"], name: "index_account_proofs_on_account_and_provider_and_username", unique: true
+    t.index ["account_id"], name: "index_account_identity_proofs_on_account_id"
+  end
+
   create_table "account_moderation_notes", force: :cascade do |t|
     t.text "content", null: false
     t.bigint "account_id", null: false
@@ -732,6 +745,7 @@ ActiveRecord::Schema.define(version: 2019_03_17_135723) do
   add_foreign_key "account_conversations", "accounts", on_delete: :cascade
   add_foreign_key "account_conversations", "conversations", on_delete: :cascade
   add_foreign_key "account_domain_blocks", "accounts", name: "fk_206c6029bd", on_delete: :cascade
+  add_foreign_key "account_identity_proofs", "accounts", on_delete: :cascade
   add_foreign_key "account_moderation_notes", "accounts"
   add_foreign_key "account_moderation_notes", "accounts", column: "target_account_id"
   add_foreign_key "account_pins", "accounts", column: "target_account_id", on_delete: :cascade