Removed obsolete calls, harmonized predefine response, added non admin user pages.

When access is denied, also provide when possible and wanted, the needed
permissions so that in the future, user will be able to ask for
permission easily.
Renamed previous user handlers as admin user handlers.
Added non admin user handler /user/{uid} .
Add new `send_...` response to `CMS_API.response_api`, and use them
instead of `create {...RESPONSE}.... ; execute`.
Fixed potential issue with storage mailer initialization if folder does
not exist.
Added utf_8_encoded helpers function on CMS_API interface.
Fixed a few unicode potential issues.
Removed a few obsolete calls.

modules/openid/cms_openid_module.e

@@ -226,7 +226,7 @@ feature -- Hooks
 					create o.make (req.absolute_script_url ("/account/auth/login-with-openid"))
 					o.ask_email (True)
 					o.ask_all_info (False)
-					if attached o.auth_url (p_openid) as l_url then
+					if p_openid.is_valid_as_string_8 and then attached o.auth_url (p_openid.to_string_8) as l_url then
 						r.set_redirection (l_url)
 					else
 						s.append (" Failure")
@@ -248,7 +248,7 @@ feature -- Hooks
 				attached {WSF_STRING} req.cookie (a_openid_api.session_token) as l_cookie_token
 			then
 					-- Logout OAuth
-				create l_cookie.make (a_openid_api.session_token, l_cookie_token.value)
+				create l_cookie.make (a_openid_api.session_token, l_cookie_token.url_encoded_value)
 				l_cookie.set_path ("/")
 				l_cookie.set_max_age (-1)
 				res.add_cookie (l_cookie)
@@ -335,6 +335,7 @@ feature -- Openid Login
 			b: STRING
 			o: OPENID_CONSUMER
 			v: OPENID_CONSUMER_VALIDATION
+			l_email: STRING_8
 		do
 			create {GENERIC_VIEW_CMS_RESPONSE} r.make (req, res, api)
 			create b.make_empty
@@ -346,8 +347,9 @@ feature -- Openid Login
 				v.validate
 				if v.is_valid then
 					if attached v.identity as l_identity and then
-					    attached v.email_attribute as l_email
+					    attached v.email_attribute as l_email_attrib
 					then
+						l_email := api.utf_8_encoded (l_email_attrib)
 						l_user_api := api.user_api
 						if attached l_user_api.user_by_email (l_email) as p_user then
 								-- User with email exist
@@ -355,7 +357,7 @@ feature -- Openid Login
 									-- Update openid entry?
 							else
 									-- create a oauth entry
-								a_openid_api.new_user_openid (l_identity,p_user)
+								a_openid_api.new_user_openid (l_identity, p_user)
 							end
 							create l_cookie.make (a_openid_api.session_token, l_identity)
 							l_cookie.set_max_age (a_openid_api.session_max_age)
@@ -368,7 +370,7 @@ feature -- Openid Login
 							l_roles.force (l_user_api.authenticated_user_role)
 
 								-- Create a new user and oauth entry
-							create l_user.make (l_email)
+							create l_user.make (l_email_attrib)
 							l_user.set_email (l_email)
 							l_user.set_password (new_token) -- generate a random password.
 							l_user.set_roles (l_roles)