Ajout de tests.
Merge branch 'release-1.6.0' into release-1.6.1

Conflicts:
	fckeditor/editor/filemanager/upload/test.html
Merge branch 'release-1.6.1' into release-1.6.2
Merge branch 'release-1.6.2' into release-1.6.3
Merge branch 'release-1.6.3'
Correctif sur checkdate()
Merge branch 'release-1.6.0' into release-1.6.1
Merge branch 'release-1.6.1' into release-1.6.2
Merge branch 'release-1.6.2' into release-1.6.3
Merge branch 'release-1.6.3'
Modification du calendrier javascript utilisé.