This replaces save_object and execute methods by 3 methods:
readPost - Reads POST data
update - Update object state
render - Render HTML UI

The point is to avoid reading POST and rendering HTML when this is not
 needed (when doing stuff through the webservice for instance).

It’s also more consisent across FD with all classes handling some kind
 of dialog implementing the new interface FusionDirectoryDialog which
 makes sure these 3 methods are implemented.

issue #6072

Ppolicy plugin now stores the full dn of the default ppolicy instead of
 only the cn.

issue #6093

This avoids problems with templates not behaving like LDAP data.
I tried to use the option in all cases where the array is stored for
 futur use, and of course especially for simplePlugin.

issue #6080

issue #6053

Avoid hard-coded limits and instead have a configuration option to set
 maximum size for user avatars

issue #6049

This makes more sense since it means asking for password at creation,
 and not changing password when applying.

issue #6035

issue #6034

issue #6001

Moved userinfo related functions as methods in userinfo
Moved ppolicy account expiration check to expired_status method
Split ppolicy fetch in a method so that it can be used by expiration
 warning detection later.

issue #6001

issue #5977

issue #5955

Basic fixes like identation

issue #5955

issue #5956

issue #5915

Also added formnovalidate="formnovalidate" to all submit inputs which
 should not validate data.

issue #5910

issue #5909

Otherwise when false the hook gets an empty parameter.
Also this is consistent with previous behavior.

issue #3710

issue #3710

Code is getting complex and changed a lot, it fits better in its own
 file.

issue #3710

Some functions were also added to ease public-forms coding

issue #3710

issue #3710

Also ACLs are checked to make sure the filter is allowed before running
 the query.
Now plugins can add fields which will be part of the default searched
 fields for a type. This will be used by the mail plugin for instance.

issue #5867

This allows to generate filters automagically most of the time and avoid
 duplicated informations.

issue #5135

issue #5831

This allows to do tab filters and property column without having to
 create objects of each tab.
Adaptations will be needed in all plugins.
This also activates new management class for groups to test it with
 several object types.

issue #5820

This also fix the workflow to make sure the language in the header is
 correct in all cases.
A PHP error is triggered if setlocale fails or if the wrong language
 header was sent.

issue #5820

When moving a node with subnodes, like a departement, this will use a
 filter like member=* to get references, meaning it will open all groups
 and roles and other objects which may reference DNs to make sure the
 foreign key is applied and the new DN is stored.
This will be slow if there are a lot of those objects.
Impacted fields are member, manager, roleOccupant and owner.
This is needed because they do not allow SUBSTR searches by schema
 definition.

issue #5799

issue #5808

Phone numbers now have a special attributes which has a button to
 select from list a number of phone, mobile or both.
It’s used in user for telephoneNumber and mobile, and in department for
 telephoneNumber.

closes #4467

Use "static" keyword instead of "self"

Signed-off-by: Benoit Mortier <benoit.mortier@opensides.be>