added elastic apm and fixed session updated_at bug

config/elastic_apm.yml

@@ -0,0 +1,11 @@
+# config/elastic_apm.yml:
+
+# Set service name - allowed characters: a-z, A-Z, 0-9, -, _ and space
+# Defaults to the name of your Rails app
+service_name: <%= ENV['ELASTIC_APM_URL'] || 'gabsocial' %> 
+
+# Use if APM Server requires a token
+secret_token: <%= ENV['ELASTIC_APM_SECRET_TOKEN'] || '' %> 
+
+# Set custom APM Server URL (default: http://localhost:8200)
+server_url:  <%= ENV['ELASTIC_APM_URL'] || 'http://localhost:8200'%>