improved latex problem template; hls codemirror box autosizes height;

capa responsetypes can now include "inline='1'" for their span to be inline

cms/templates/widgets/source-edit.html

@@ -45,6 +45,9 @@
 	       refresh_hls(el);
 	       $(this).dequeue(); 
 	   });
+	 // resize the codemirror box
+	 h = el.height();
+	 el.find('.CodeMirror-scroll').height(h-100);
      }
 
      // compile & save button