[0.85] upgrade to select2 3.4.0


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21043 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] work on dropdown display (cutting on left)


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21044 35612d4c-9d10-0410-837c-bf9dd1be60d7