Remove username field server side autofill on login forms

<input login `request.get("__ac")` > removed

When the login form is rendered, the login field is not already filled.
We assume that the "__ac" cookie is deleted, so no need to generate the
login name server side. It also avoids to use old "__ac" cookies.
Browsers are already able to autocomplete them just by clicking on the field.

bt5/erp5_commerce/SkinTemplateItem/portal_skins/erp5_commerce_widget_library/WebSite_viewStandardLoginWidgetRenderer.xml

@@ -51,7 +51,7 @@
      <table>\n
        <tr>\n
          <td class="article"><span tal:replace="python: here.Base_translateString(\'Username\')"/>:</td>\n
-         <td><input name="__ac_name" size="10" type="text" tal:attributes="value python: request.get(\'__ac_name\') or \'\'"/></td>\n
+         <td><input name="__ac_name" size="10" type="text" /></td>\n
        </tr>\n
        <tr>\n
          <td class="article"><span tal:replace="python: here.Base_translateString(\'Password\')"/>:</td>\n

bt5/erp5_commerce/bt/revision

-288
\ No newline at end of file
+289

bt5/erp5_credential/SkinTemplateItem/portal_skins/erp5_credential/login_form.xml

@@ -66,7 +66,7 @@
           <fieldset>\n
             <div class="field">\n
               <label for="name" class="required" i18n:translate="" i18n:domain="ui">Name</label>\n
-              <div class="input"><input type="text" name="__ac_name" id="name" tal:attributes="value python: request.get(\'__ac_name\') or \'\'" /></div>\n
+              <div class="input"><input type="text" name="__ac_name" id="name" /></div>\n
               <p class="clear"></p>\n
             </div>\n
             <div class="field">\n

bt5/erp5_credential/bt/revision

-435
+436

bt5/erp5_mobile/SkinTemplateItem/portal_skins/erp5_mobile_ui/login_form.xml

@@ -89,7 +89,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n
       <fieldset class="left fielset_login">\n
         <div class="field">\n
           <label for="name" class="required" i18n:translate="" i18n:domain="ui">Name</label>\n
-          <div class="input"><input type="text" name="__ac_name" id="name" tal:attributes="value python: request.get(\'__ac_name\') or \'\'"/></div>\n
+          <div class="input"><input type="text" name="__ac_name" id="name" /></div>\n
         </div>\n
         <div class="field">\n
           <label for="password" i18n:translate="" i18n:domain="ui">Password</label>\n

bt5/erp5_mobile/bt/revision

-71
\ No newline at end of file
+72
\ No newline at end of file

product/ERP5/bootstrap/erp5_xhtml_style/SkinTemplateItem/portal_skins/erp5_xhtml_style/login_form.xml

@@ -66,7 +66,7 @@
           <fieldset>\n
             <div class="field">\n
               <label for="name" class="required" i18n:translate="" i18n:domain="ui">Name</label>\n
-              <div class="input"><input type="text" name="__ac_name" id="name" tal:attributes="value python: request.get(\'__ac_name\') or \'\'" /></div>\n
+              <div class="input"><input type="text" name="__ac_name" id="name" /></div>\n
               <p class="clear"></p>\n
             </div>\n
             <div class="field">\n

product/ERP5/bootstrap/erp5_xhtml_style/bt/revision

-1117
\ No newline at end of file
+1118
\ No newline at end of file