Merge pull request #3209 from FreeCodeCamp/fix/emmet-undefined

fix emmet undefined in non-html challenges

client/commonFramework.js

@@ -216,6 +216,7 @@ var allSeeds = '';
     });
 })();
 
+if (typeof emmetCodeMirror !== 'undefined') {
   var defaultKeymap = {
     'Cmd-E': 'emmet.expand_abbreviation',
     'Tab': 'emmet.expand_abbreviation_with_tab',
@@ -223,6 +224,7 @@ var defaultKeymap = {
   };
 
   emmetCodeMirror(editor, defaultKeymap);
+}
 
 editor.setOption('extraKeys', {
   Tab: function(cm) {