Updated Login Module.

- OAUTH LOGIN: is generic based on a new OAUTH_20_GENERIC_API
        - Storage (at the moment only SQL) for OAUTH_CONSUMER configuration.
        - OAUTH login and callback are generic.
        - Added a OAUTH_20_GENERIC_API.
        - Added scripts and templates to build the new OAUTH tables.
        - Fixed CMS_STORAGE_SQL_I.check_sql_query_validity issue.
        - Extended CMS_STORAGE_SQL_I, to execute scripts with paramerters.
        - Updated filter, now it's generic for every OAUTH consumer.

examples/demo/site/scripts/oauth2_template.sql

@@ -0,0 +1,14 @@
+BEGIN;
+
+
+CREATE TABLE :table_name (
+   "uid" INTEGER PRIMARY KEY NOT NULL CHECK("uid">=0),
+   "access_token" TEXT  NOT NULL,
+   "created" DATETIME NOT NULL,
+   "details" TEXT NOT NULL,
+   CONSTRAINT "uid"
+    UNIQUE("uid")
+   );
+
+
+COMMIT;