backporte some bugfixes from trunk intp QA_2_10:

- bug #1567317 [sqp] Syntax highlighter: extra spaces
- bug #1239401 [sqp] table dot numeric field name
- bug #1672789 [sqp] Undefined offset: 4 in sqlparser.lib.php #1674
- bug #1682044 [export] Export file even if file not selected
- bug #1664212 querywindow loses url encoded characters
+ [config] clean cookies on phpMyAdmin upgrade
- bug #1674972 [export] no export with %afm%
- bug #1667887 HTML maxlength
- bug #1679055 #1050 - Table '<table name>' already exists

tbl_row_action.php

@@ -91,7 +91,7 @@ if (!empty($submit_mult)) {
             $single_table = TRUE;
 
             $primary_key = array();
-            $sql_query = urldecode($sql_query);
+            //$sql_query = urldecode($sql_query);
             // garvin: As we got the fields to be edited from the 'rows_to_delete' checkbox, we use the index of it as the
             // indicating primary key. Then we built the array which is used for the tbl_change.php script.
             foreach ($rows_to_delete AS $i_primary_key => $del_query) {