Fixing codestyle

And convert global_get calls to get

issue #6024

Made sure to empty alt attribute when an img is decoration and does not
 provide information.
In some files also fixed some alt content when it made sense

issue #5917

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

They may be intemediary classes like simpleMailMethodService

issue #5810

This reverts commit 5f875068.

Might slow down renaming a bit as all ACL assignment have to be opened,
 because the dn are base64 encoded in the LDAP field.

issue #5799

issue #5809

This avoids small efficiency issues in References tab and foreign key
 handling. Might also impact other parts of FD.

issue #5809

issue #5775

Resolve "Non-existing classes in pluglist::$info"

Closes #5700

See merge request !22

There was non-existing classes added to the info array in pluglist,
 which caused problems

closes #5700

There are some left in datepicker.js because of a bug in the sniffer,
 I did not find a way to fix that yet.

issue #5690

Remove this unused "$ui" local variable
Remove this unused "$config" local variable

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

Move this trailing comment on the previous empty line

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

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

Conflicts:
	include/class_CopyPasteHandler.inc
	include/simpleplugin/class_simplePlugin.inc

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

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

Conflicts:
	include/class_acl.inc
	include/simpleplugin/class_simplePlugin.inc
	plugins/admin/groups/class_groupManagement.inc