Sjednoceny hlavičky pro filtrování záznamů.

Header přeformátován a texty načítány z labels.

closes #77

src/main/webapp/buildings/building.zul

@@ -11,6 +11,7 @@
 				<listheader label="${labels.BuildingsGridColumnName}" sort="auto(name)" onSort="@command('onSort', column='name')" width="30%" />
 				<listheader label="${labels.BuildingsGridColumnDescription}" sort="auto(description)" onSort="@command('onSort', column='description')" width="60%" />
 			</listhead>
+			
 			<auxhead sclass="category-center" visible="@load(vm.filter)">
 				<auxheader>
 					<div sclass="find-grid-cell">
@@ -43,6 +44,7 @@
 					</div>
 				</auxheader>
 			</auxhead>
+			
 			<template name="model">
 				<listitem>
 					<listcell label="@load(each.code)" />