Allow to login with username or email.

Removed useless and unimplemented feature from CMS_FORM .
SCOOP is default for demo.ecf
Made blog and page module self administrable, i.e administration module is same as module.
This fixes the export hook for page and blog modules.
Improved sql instructions to ease debugging and catch missing sql_finalize... call.
Cleaned sql code.

modules/session_auth/persistence/cms_session_auth_storage_sql.e

@@ -41,7 +41,7 @@ feature -- Access User
 					l_uid := 0
 				end
 			end
-			sql_finalize
+			sql_finalize_query (Select_user_id_by_token)
 			if l_uid > 0 and attached api as l_cms_api then
 				Result := l_cms_api.user_api.user_by_id (l_uid)
 			end
@@ -64,7 +64,7 @@ feature -- Access User
 					Result := False
 				end
 			end
-			sql_finalize
+			sql_finalize_query (Select_user_token)
 		end
 
 feature -- Change User token
@@ -82,8 +82,8 @@ feature -- Change User token
 			l_parameters.put (create {DATE_TIME}.make_now_utc, "utc_date")
 			sql_begin_transaction
 			sql_insert (sql_insert_session_auth, l_parameters)
+			sql_finalize_insert (sql_insert_session_auth)
 			sql_commit_transaction
-			sql_finalize
 		end
 
 	update_user_session_auth (a_token: READABLE_STRING_GENERAL; a_user: CMS_USER)
@@ -99,8 +99,8 @@ feature -- Change User token
 			l_parameters.put (create {DATE_TIME}.make_now_utc, "utc_date")
 			sql_begin_transaction
 			sql_modify (sql_update_session_auth, l_parameters)
+			sql_finalize_modify (sql_update_session_auth)
 			sql_commit_transaction
-			sql_finalize
 		end
 
 feature {NONE} -- SQL statements