Added Template editing.

Creating with templates not supported yet.

Templates are listed in Context-Menu under the AddEntry Toolbar
Toolbar Button is missing an Arrow for now. Control-Size is not working correctly for now
Nested Template or Trash groups aren't considered, this is a bug!
Minor changes to the UI (Settings tabs now use common icons)
Added Workflow-Settings tab to extract all the custom action possible on entries. The copy or open on URL dbl-click setting will move over to this tab.

MacPass/MPSettingsWindowController.m

@@ -9,6 +9,7 @@
 #import "MPSettingsWindowController.h"
 #import "MPGeneralSettingsController.h"
 #import "MPServerSettingsController.h"
+#import "MPWorkflowSettingsController.h"
 
 @interface MPSettingsWindowController () {
   NSString *lastIdentifier;
@@ -109,11 +110,15 @@
 - (void)_setupDefaultSettingsTabs {
   MPGeneralSettingsController *generalSettingsController = [[MPGeneralSettingsController alloc] init];
   MPServerSettingsController *serverSettingsController = [[MPServerSettingsController alloc] init];
+  MPWorkflowSettingsController *workflowSettingsController = [[MPWorkflowSettingsController alloc] init];
   
   [self _addSettingsTab:generalSettingsController];
   [self _addSettingsTab:serverSettingsController];
+  [self _addSettingsTab:workflowSettingsController];
 
-  self.defaultToolbarItems = @[ [generalSettingsController identifier], [serverSettingsController identifier] ];
+  self.defaultToolbarItems = @[ [generalSettingsController identifier],
+                                [workflowSettingsController identifier],
+                                [serverSettingsController identifier] ];
   
 
 }