Refactored the selection tracking to be in the document now

Filtering should work reliably now. No "sticking" of entries
Fixed #42. Deleted entries now result in desolation.

MacPassTests/KPKLegacyLoadingTest.m

@@ -0,0 +1,33 @@
+//
+//  KPKTreeLoadingTest.m
+//  MacPass
+//
+//  Created by Michael Starke on 20.07.13.
+//  Copyright (c) 2013 HicknHack Software GmbH. All rights reserved.
+//
+
+#import "KPKLegacyLoadingTest.h"
+#import "KPKTreeCryptor.h"
+#import "KPKPassword.h"
+
+@implementation KPKLegacyLoadingTest
+
+- (void)setUp {
+  NSBundle *myBundle = [NSBundle bundleForClass:[self class]];
+  NSURL *url = [myBundle URLForResource:@"Test_Password_1234" withExtension:@"kdb"];
+  _data = [NSData dataWithContentsOfURL:url];
+  _password = [[KPKPassword alloc] initWithPassword:@"1234" key:nil];
+}
+
+- (void)tearDown {
+  _data = nil;
+  _password = nil;
+}
+
+- (void)testLoading {
+  KPKTreeCryptor *cryptor = [KPKTreeCryptor treeCryptorWithData:_data password:_password];
+  KPKTree *tree = [cryptor decryptTree:NULL];
+  STAssertNotNil(tree, @"Loading should result in a tree object");
+}
+
+@end