MDL-32581 support additional format field with all text field in extrnal lib function + new possible ws params to decide how format is returned (which are stored in a singleton)

Conflicts:

	group/externallib.php

MDL-31762 username should be lowercase and check against PARAM_USERNAME when creating/updating user by web service

Currently there is no validation on user info (firstname/lastname) in user/editadvanced_form.php

New PARAM_COMPONENT, PARAM_AREA and PARAM_PLUGIN + fixing of hopefully all current incorrect parameter types. This should help with diagnosing of incorrectly named 3rd party plugins too.

1. moodle_user_get_course_participants_by_id web service to get user details in course context
2. Fixed the proformance issues of get_users_by_id web service

MDL-27759 user webservice - added new PARAM for timezone PARAM_TIMEZONE, to validate timezone input in webservice while deling with user information

MDL-26774 fix web service function moodle_user_get_users_by_id. It now matches viewing profile / editing profile. It suppose to work for current user / other user / admin. It is not returning the information of course profile.

message MDL-24694 removed references to user->emailstop. the column itself will be removed in a later version

webservice MDL-18655 add new capability moodle/user:viewalldetails allowing to see all user information. This capability is set up copying the current moodle/user:update assignations

MDL-23774 deleting of admins is a restricted operation, also external lib should not delete the account that is calling it; user pictures are not a problem any more

webservice MDL-22255 fix moodle_user_get_users_by_id() ws function when no custom field are returned

webservice MDL-22562 add missing user profile custom fields to external create_users function + update test client

MDL-22084 making a clear distinction between list of our translations and list of all languages defined in ISO 639-2

MDL-21693 Dropping _utf8 suffix from language codes and folder names; enabling new string managers - please note the transition is not yet fully complete because we need to wait for git to recognize the renames in cvs

web service MDL-13126 little change into create user description (it was not correct and also breaking a test into the external function).

webservice MDL-21527 update_users ws function : remove user preferences, we should create a specific set_user_preferences ws function

webservice MDL-21527 update_users ws function supports customfields now (MDL-20616 patch needs to be committed in order to use the test client)

webservice MDL-20808 add user lib.php, add web service user functions, rename $usercustomfields variable into profile_user_record() function