made var name from head to header

Author: Gaurav SinghaRoy

app/assets/javascripts/resources/querybuilder.js

@@ -626,7 +626,7 @@ QueryBuilder = {
                     var file_data = "";
                     reader.onload = function(e){
                         var blocks = QueryBuilder.convert.configured.get_string_blocks(reader.result);
-                        configured_convert.head = QueryBuilder.convert.configured.get_block_string_from_blocks(blocks,"head");
+                        configured_convert.header = QueryBuilder.convert.configured.get_block_string_from_blocks(blocks,"header");
                         configured_convert.body = QueryBuilder.convert.configured.get_block_string_from_blocks(blocks,"body");
                         configured_convert.footer = QueryBuilder.convert.configured.get_block_string_from_blocks(blocks,"footer");
                         str_variable_dictionary = QueryBuilder.convert.configured.get_block_string_from_blocks(blocks,"variable_dictionary");

app/assets/javascripts/resources/sparql.js

@@ -82,7 +82,7 @@ SPARQL = {
 
             }
             download_url += "&variable_dictionary="+encodeURIComponent(str_variable_dictionary);
-            download_url += "&header="+encodeURIComponent(configured_convert.head);
+            download_url += "&header="+encodeURIComponent(configured_convert.header);
             download_url += "&body="+encodeURIComponent(configured_convert.body);
             download_url += "&footer="+encodeURIComponent(configured_convert.footer);
             window.open(download_url);

app/assets/javascripts/resources/variables.js

@@ -6,7 +6,7 @@ This file will contain any common global variables for javascript
 
 var configured_convert = {
 	variable_dictionary : [],
-	head : "",
+	header : "",
 	body : "",
 	footer : ""
 };