Stylistic changes

Optional keys are now denoted as optionalat the strat of the comment block
instead of at the end.

config.ini.example

@@ -30,24 +30,27 @@ server_privkey_file = path/to/other/keyfile
 # The network to assign client ip:s from
 client_network = a.network.in.cidr/notation
 
+# Optional:
 # Any extra configuration directives to include in the config file.
-# Optional.
+# Will override defaults.
 server_extra_config = path/to/a/conf/fragment
 
+# Optional:
 # Any extra configuration directives to include in client configs.
-# Optional. Will override defaults.
+# Will override defaults.
 client_extra_config = path/to/another/fragment
 
+# Optional:
 # The maximum number of clients to allow per user.
-# Optional, defaults to unlimited, equivalent to setting this value to 0.
+# Defaults to unlimited, equivalent to setting this value to 0.
 user_client_limit = 3
 
 
 [security]
+# Optional.
 # A comma-separated list of entitlements (as read from oauth) that should
 # be required to access the site. Access is granted if the user has any of
 # the listed entitlements.
-# Optional.
 required_entitlement = urn:mace:some:entitlement