Integrate Authentication modules.

Updated code for sql that should not use parameters
   to expand :table_name in table name usage,
   since Eiffel Store will use quote,
   and MySQL does not like them.

Merge remote-tracking branch 'jvelilla/roc_auth_v1' into ewf_v1_mod_env

Conflicts:
	examples/demo/demo-safe.ecf
	modules/auth/cms_authentication_module.e

examples/demo/site/modules/oauth20/scripts/oauth2_consumers.sql

@@ -0,0 +1,18 @@
+
+CREATE TABLE oauth2_consumers(
+   `cid` INTEGER PRIMARY KEY NOT NULL CHECK(`cid`>=0),
+   `name` VARCHAR(255) NOT NULL,
+   `api_secret` TEXT  NOT NULL,
+   `api_key` TEXT NOT NULL,
+   `scope` VARCHAR (100) NOT NULL,
+   `protected_resource_url` VARCHAR (255) NOT NULL,
+   `callback_name` VARCHAR(255) NOT NULL,
+   `extractor` VARCHAR(50) NOT NULL,
+   `authorize_url` VARCHAR (255) NOT NULL,
+   `endpoint`  VARCHAR (255) NOT NULL,
+   CONSTRAINT `cid`
+    UNIQUE(`cid`),
+   CONSTRAINT `name`
+    UNIQUE(`name`)
+   );
+