Adds the possibility to use CAS 1.6.
Add new options in backend configuration.

 fix: English - remove apostrophe because simple quote are used and php bugs need to check if double quotes can be used in simple plugin

Signed-off-by: Benoit Mortier <benoit.mortier@fusiondirectory.org>

Simplify statement about passwords

The DN belongs to the user

Should be either "in LDAP" or "inside/in the LDAP directory"

issue #6181

Make display errors tell its php errors

Signed-off-by: Benoit Mortier <benoit.mortier@fusiondirectory.org>

This is easy to check as management classes respect the size limit
 option.

issue #6169

issue #6150

This modifier stores a value in LDAP configuration object to make sure
 to always increment it each time the template is used.

issue #6102

Make sure the error is tagged as coming from language field

issue #6051

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

issue #6071

issue #6065

issue #6054

issue #6051

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

issue #6049

This is to avoid hard coded values

issue #5531

And convert global_get calls to get

issue #6024

This allows to avoid ldap reads from pluglist::load, and should fix a
 crash happenning in index.php when using encrypted password in config
 file.

issue #6015

This will allow to disable password methods, for instance clear, empty
 or md5.

issue #5886

issue #5937

issue #5955

Basic fixes like identation

issue #5955

issue #5956

issue #5956

issue #5951

ACLs are not handled yet

issue #5135

issue #5778

issue #5778

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

issue #5135

issue #5820

This adds back sorting on the configuration side so that selecting the
 language is easier.

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 #5761

This allows to use SASL as default hash before filling SASL settings.
This means it can be selected from setup as well.
The admin won’t be able to save if he selects SASL as default hash but
 does not fill SASL settings.

closes #5589