bug #4611 : Fixing bug where the form was submitted as a multipart form while Jersey was expecting a simple form.
Specific code for Internet Explorer is not required as we don't have to submit the data to an iframe.
Merge branch 'bug_4611' of https://github.com/ehsavoie/Silverpeas-Core into ehsavoie-bug_4611
Merge branch 'core-5.12.x' of github.com:Silverpeas/Silverpeas-Core into core-5.12.x