Define context (_remote=1) for spellcheck requests to send proper response on error

program/js/editor.js

@@ -49,7 +49,7 @@ function rcmail_editor_init(config)
       theme_advanced_buttons1: 'bold,italic,underline,|,justifyleft,justifycenter,justifyright,justifyfull,|,bullist,numlist,outdent,indent,ltr,rtl,blockquote,|,forecolor,backcolor,fontselect,fontsizeselect',
       theme_advanced_buttons2: 'link,unlink,table,|,emotions,charmap,image,media,|,code,search,undo,redo',
       spellchecker_languages: (rcmail.env.spellcheck_langs ? rcmail.env.spellcheck_langs : 'Dansk=da,Deutsch=de,+English=en,Espanol=es,Francais=fr,Italiano=it,Nederlands=nl,Polski=pl,Portugues=pt,Suomi=fi,Svenska=sv'),
-      spellchecker_rpc_url: '?_task=utils&_action=spell_html',
+      spellchecker_rpc_url: '?_task=utils&_action=spell_html&_remote=1',
       spellchecker_enable_learn_rpc: config.spelldict,
       accessibility_focus: false,
       oninit: 'rcmail_editor_callback'

program/steps/mail/compose.inc

@@ -843,7 +843,7 @@ function rcmail_compose_body($attrib)
       "googie.decorateTextarea('%s');\n".
       "%s.set_env('spellcheck', googie);",
       $RCMAIL->output->get_skin_path(),
-      $RCMAIL->url(array('_task' => 'utils', '_action' => 'spell')),
+      $RCMAIL->url(array('_task' => 'utils', '_action' => 'spell', '_remote' => 1)),
       !empty($dictionary) ? 'true' : 'false',
       JQ(Q(rcube_label('checkspelling'))),
       JQ(Q(rcube_label('resumeediting'))),