Remove TestSystem.Descriptor dependency on PageFactory.
Move all PageFinder code in a separate page: fitnesse.pagefinder. Cleans up fitnesse.components.
Move refactorings to fitnesse.refactoring. Cleans up fitnesse.components.
move page finder to wiki.search
move refactoring to wiki.refactoring
Remove unused interface fitnesse.components.PageReferencer
remove file unit_test_run. No source file.
Move SaveRecorder to fitnesse.responders.editing
Move wiki page rendering tests to WikiImportingResponder tests.
Move importing related stuff that depends on responders to the responders package.
Use constants in WikiImportProperty
Merge branch 'wiki-reorg'

Conflicts:
	src/fitnesse/testsystems/slim/SlimTestSystemTest.java
	src/fitnesse/testsystems/slim/TestSystemBaseTest.java
	src/fitnesse/wiki/WikiImportPropertyTest.java
	src/fitnesse/wiki/search/AttributeWikiPageFinderTest.java
	src/fitnesse/wiki/search/SuiteSpecificationMatchFinderTest.java
	src/fitnesse/wiki/search/WhereUsedPageFinderTest.java
	unit_test_run
Remove file unit_test_run. Got in by accident I think.