config: change default .ini to always include trace_errors settings and thus avoid deprecation warnings

Gets rid of:

data/env/lib/python2.7/site-packages/tg/configuration/app_config.py:473
  data/env/lib/python2.7/site-packages/tg/configuration/app_config.py:473: DeprecationWarning: direct usage of error tracing options has been deprecated, please specify them as trace_errors.option_name instad of directly setting option_name. EXAMPLE: trace_errors.error_email
    "setting option_name. EXAMPLE: trace_errors.error_email", DeprecationWarning)

development.ini

@@ -303,6 +303,17 b' beaker.session.secret = development-not-'
 #beaker.session.sa.url = postgresql://postgres:qwe@localhost/kallithea
 #beaker.session.table_name = db_session
 
+############################
+## ERROR HANDLING SYSTEMS ##
+############################
+
+# Propagate email settings to ErrorReporter of TurboGears2
+# You do not normally need to change these lines
+get trace_errors.error_email = email_to
+get trace_errors.smtp_server = smtp_server
+get trace_errors.smtp_port = smtp_port
+get trace_errors.from_address = error_email_from
+
 ################################################################################
 ## WARNING: *DEBUG MODE MUST BE OFF IN A PRODUCTION ENVIRONMENT*              ##
 ## Debug mode will enable the interactive debugging tool, allowing ANYONE to  ##

kallithea/lib/paster_commands/template.ini.mako

@@ -399,7 +399,6 b' beaker.session.secret = ${uuid()}'
 #beaker.session.sa.url = postgresql://postgres:qwe@localhost/kallithea
 #beaker.session.table_name = db_session
 
-%if error_aggregation_service == 'appenlight':
 <%text>############################</%text>
 <%text>## ERROR HANDLING SYSTEMS ##</%text>
 <%text>############################</%text>
@@ -411,6 +410,7 b' get trace_errors.smtp_server = smtp_serv'
 get trace_errors.smtp_port = smtp_port
 get trace_errors.from_address = error_email_from
 
+%if error_aggregation_service == 'appenlight':
 <%text>####################</%text>
 <%text>### [appenlight] ###</%text>
 <%text>####################</%text>