limits musicians in weekly email

this limits the number of users in weekly email to be 20

ruby/lib/jam_ruby/lib/email_new_musician_match.rb

@@ -2,6 +2,7 @@ module JamRuby
   class EmailNewMusicianMatch
 
     PER_PAGE = 150
+    LIMIT = 20
     JOINED_WITHIN_DAYS = 7
     ACTIVE_WITHIN_DAYS = 30
     
@@ -39,7 +40,7 @@ module JamRuby
           true, true, 7.days.ago, 6.days.ago).where.not(id: email_sending.sent_user_ids).order("
             CASE WHEN users.email IN ('#{PRIORITY_RECIPIENTS.map {|str| "\"#{str}\""}.join(',')}') 
             THEN 0 ELSE 1 END, last_active_at DESC").select("users.*, 
-            GREATEST(updated_at, last_jam_updated_at) AS last_active_at").limit(20)
+            GREATEST(updated_at, last_jam_updated_at) AS last_active_at").limit(LIMIT)
         
         AdminMailer.ugly({to: APP_CONFIG.user_match_monitoring_email,
           subject:"Weekly user match email sending job started.",