Restrucutred Settings and extracts Password edit

Introduced custom save palen accessory view to enable save in different formats (unfunctional for now)
Started reworking drag and drop of entries and groups

MacPass/MPDocumentWindowController.m

@@ -16,6 +16,7 @@
 #import "MPAppDelegate.h"
 #import "MPActionHelper.h"
 #import "MPDatabaseSettingsWindowController.h"
+#import "MPPasswordEditWindowController.h"
 #import "MPConstants.h"
 #import "MPSettingsHelper.h"
 #import "MPDocumentWindowDelegate.h"
@@ -25,7 +26,6 @@
 @interface MPDocumentWindowController () {
 @private
   id _firstResponder;
-  BOOL _saveAfterPasswordEdit; // Flag to indicat that the document needs to be saved after password edit did finish
 }
 
 @property (strong) IBOutlet NSSplitView *splitView;
@@ -38,6 +38,7 @@
 @property (strong) MPInspectorViewController *inspectorViewController;
 @property (strong) MPDatabaseSettingsWindowController *documentSettingsWindowController;
 @property (strong) MPDocumentWindowDelegate *documentWindowDelegate;
+@property (strong) MPPasswordEditWindowController *passwordEditWindowController;
 
 @property (strong) MPToolbarDelegate *toolbarDelegate;
 
@@ -54,7 +55,6 @@
     _entryViewController = [[MPEntryViewController alloc] init];
     _inspectorViewController = [[MPInspectorViewController alloc] init];
     _documentWindowDelegate = [[MPDocumentWindowDelegate alloc] init];
-    _saveAfterPasswordEdit = NO;
   }
   return self;
 }
@@ -76,7 +76,6 @@
   */
   
   [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_didRevertDocument:) name:MPDocumentDidRevertNotifiation object:[self document]];
-  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_setPasswordAndSave) name:MPDocumentRequestPasswordSaveNotification object:[self document]];
   
   [_entryViewController setupNotifications:self];
   [_inspectorViewController setupNotifications:self];
@@ -156,6 +155,13 @@
 }
 
 #pragma mark Actions
+- (void)saveDocument:(id)sender {
+  MPDocument *document = [self document];
+  if(!document.hasPasswordOrKey) {
+    // warning if no password ist set!
+  }
+  [[self document] saveDocument:sender];
+}
 - (void)exportDatabase:(id)sender {
   NSSavePanel *savePanel = [NSSavePanel savePanel];
   [savePanel setAllowsOtherFileTypes:YES];
@@ -255,7 +261,10 @@
 }
 
 - (void)editPassword:(id)sender {
-  [self _showDatabaseSetting:MPDatabaseSettingsTabPassword];
+  if(!self.passwordEditWindowController) {
+    self.passwordEditWindowController = [[MPPasswordEditWindowController alloc] initWithDocument:[self document]];
+  }
+  [NSApp beginSheet:[self.passwordEditWindowController window] modalForWindow:[self window] modalDelegate:nil didEndSelector:NULL contextInfo:NULL];
 }
 
 - (void)showDatabaseSettings:(id)sender {
@@ -375,31 +384,11 @@
   [_outlineViewController showOutline];
 }
 
-#pragma mark MPDatabaseSettingsDelegate
-- (void)didCancelDatabaseSettings {
-  _saveAfterPasswordEdit = NO; // Just Reset the flag
-}
-
-- (void)didSaveDatabaseSettings {
-  if (_saveAfterPasswordEdit) {
-    _saveAfterPasswordEdit = NO;
-    [[self document] saveDocument:nil];
-  }
-}
-
 #pragma mark Helper
-
-- (void)_setPasswordAndSave {
-  _saveAfterPasswordEdit = YES;
-  [self editPassword:nil];
-}
-
 - (void)_showDatabaseSetting:(MPDatabaseSettingsTab)tab {
   if(!self.documentSettingsWindowController) {
     _documentSettingsWindowController = [[MPDatabaseSettingsWindowController alloc] initWithDocument:[self document]];
-    [_documentSettingsWindowController setDelegate:self];
   }
-  [self.documentSettingsWindowController update];
   [self.documentSettingsWindowController showSettingsTab:tab];
   [[NSApplication sharedApplication] beginSheet:[self.documentSettingsWindowController window]
                                  modalForWindow:[self window]