Clean up pghero reporting

lib/pghero/methods/connections.rb

@@ -42,7 +42,7 @@ def recently_connected_users
         users = select_all <<-SQL
           SELECT distinct username
           FROM "pghero_connection_stats" 
-          WHERE database='primary' and captured_at > date_trunc('day', NOW() - interval '24 hours')
+          WHERE database='primary' and captured_at > date_trunc('day', NOW() - interval '3 hours')
           ORDER by username
         SQL
       end
@@ -51,11 +51,11 @@ def connection_history_for_user(username)
         history = select_all <<-SQL
           SELECT date_trunc('minute', captured_at) as the_date, max(total_connections) as tot 
           FROM "pghero_connection_stats" 
-          WHERE database='primary' and captured_at > date_trunc('day', NOW() - interval '24 hours') and username = '#{username}'
+          WHERE database='primary' and captured_at > date_trunc('day', NOW() - interval '3 hours') and username = '#{username}'
           GROUP by username, date_trunc('minute', captured_at) 
           ORDER by date_trunc('minute', captured_at)
         SQL
-        Hash[history.map{|h| [h[:the_date], h[:tot]]}]
+        this_history = Hash[history.map{|h| [h[:the_date].strftime("%a %l:%M %P"), h[:tot]]}] 
       end
 
       def capture_connection_stats