bug #4737 :  Add a whitelist of files that can be uploaded. The whitelist is based upon the file extension.
bug #4737 :  The whilelist is now based upon the mime-type of the files in order to avoid the wrong file extension. Browses also the files in directories while uploading a zip website archive
Merge branch 'bug-4737' of https://github.com/mmoqui/Silverpeas-Components into mmoqui-bug-4737
bug #4737 :  When updating a page name, the extension of the file isn't taken into account and it is added to the updated file name
Merge branch 'bug-4737' of https://github.com/mmoqui/Silverpeas-Components into mmoqui-bug-4737
Merge branch 'mmoqui-bug-4737' into components-5.12.x