Use github username on activity feed if name does not exist

Fixes: #68

resources/migrations/20170613113100-username-for-empty-name-in-activity-feed.up.sql

@@ -0,0 +1,84 @@
+drop view if exists claims_view cascade;
+drop view if exists bounties_view cascade;
+drop view if exists activity_feed_view cascade;
+CREATE VIEW claims_view AS SELECT i.title AS issue_title,
+    i.issue_number,
+    r.repo AS repo_name,
+    r.owner AS repo_owner,
+    coalesce(u.name, u.login) AS user_name,
+    u.avatar_url AS user_avatar_url,
+    i.payout_receipt,
+    p.updated,
+    i.balance,
+    p.state AS pr_state
+   FROM issues i,
+    users u,
+    repositories r,
+    pull_requests p
+  WHERE r.repo_id = i.repo_id AND p.issue_id = i.issue_id AND p.user_id = u.id AND i.contract_address IS NOT NULL AND i.comment_id IS NOT NULL
+  ORDER BY p.updated;
+
+create view bounties_view as
+SELECT i.title AS issue_title,
+    i.issue_number,
+    r.repo AS repo_name,
+    r.owner AS repo_owner,
+    concat(r.owner, '/', r.repo)::character varying(128) AS user_name,
+    r.owner_avatar_url AS user_avatar_url,
+    i.payout_receipt,
+    i.balance,
+    i.updated
+   FROM issues i,
+    repositories r
+  WHERE r.repo_id = i.repo_id AND i.contract_address IS NOT NULL AND i.comment_id IS NOT NULL
+  ORDER BY i.updated;
+
+create view activity_feed_view as
+ SELECT 'open-claim'::text AS type,
+    claims_view.issue_title,
+    claims_view.repo_name,
+    claims_view.repo_owner,
+    claims_view.issue_number,
+    claims_view.user_name,
+    claims_view.user_avatar_url,
+    claims_view.balance,
+    claims_view.updated
+   FROM claims_view
+  WHERE claims_view.pr_state = 0 AND claims_view.payout_receipt IS NULL
+UNION
+ SELECT 'claim-payout'::text AS type,
+    claims_view.issue_title,
+    claims_view.repo_name,
+    claims_view.repo_owner,
+    claims_view.issue_number,
+    claims_view.user_name,
+    claims_view.user_avatar_url,
+    claims_view.balance,
+    claims_view.updated
+   FROM claims_view
+  WHERE claims_view.pr_state = 1 AND claims_view.payout_receipt IS NOT NULL
+UNION
+ SELECT 'new-bounty'::text AS type,
+    bounties_view.issue_title,
+    bounties_view.repo_name,
+    bounties_view.repo_owner,
+    bounties_view.issue_number,
+    bounties_view.user_name,
+    bounties_view.user_avatar_url,
+    bounties_view.balance,
+    bounties_view.updated
+   FROM bounties_view
+  WHERE bounties_view.balance = 0::numeric AND bounties_view.payout_receipt IS NULL
+UNION
+ SELECT 'balance-update'::text AS type,
+    bounties_view.issue_title,
+    bounties_view.repo_name,
+    bounties_view.repo_owner,
+    bounties_view.issue_number,
+    bounties_view.user_name,
+    bounties_view.user_avatar_url,
+    bounties_view.balance,
+    bounties_view.updated
+   FROM bounties_view
+  WHERE bounties_view.balance > 0::numeric AND bounties_view.payout_receipt IS NULL
+  ORDER BY 9 DESC;