Bug 223246 [Markers] Rename markerFieldFilterGrouping
markerFieldFilterGrouping is not meaningful name for something that is really a markerFieldConfiguration definition. Added to the fact that we also have markerGroupings this is very confusing.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerContentGenerator.java
Map all = getTypesTable();
		if(all.containsKey(typeId))
			return (MarkerType) all.get(typeId);
		return null;
	}
	/**
	 * Get the table that maps type ids to markerTypes.
	 * @return Map of {@link String} to {@link MarkerType}
	 */
	private Map getTypesTable() {
		if (allTypesTable == null) {
			allTypesTable = new HashMap();
			
			Iterator allIterator = markerTypes.iterator();
			while (allIterator.hasNext()) {
				MarkerType next = (MarkerType) allIterator.next();
				allTypesTable.put(next.getId(), next);
			}
		}
		return allTypesTable;
	}
	/**
	 * Initialise the receiver from the configuration element. This is done as a
	 * post processing step.
	 * 
	 * @param registry
	 *            the MarkerSupportRegistry being used to initialise the
	 *            receiver.
	 */
	public void initializeFromConfigurationElement(