changed "discard changes" to a more useful "cancel" button

„cancel” will take you back to the last view you were in.

templates/Sparkle/misc/form/table_section.tpl

@@ -3,7 +3,7 @@
 		{$title}
 	</th>
 	<th style="text-align:right;">
-		<input type="reset" value="{$lng['panel']['reset']}" />
+		<input type="reset" value="{$lng['panel']['cancel']}" id="historyback" />
 		<input type="submit" value="{$lng['panel']['save']}" />
 	</th>
 </tr>