ios: File browser tweaks.

The title is now just the last component of the path.
     The custom back button text is removed.
     A settings button is added to the right of the navigation bar.

ios/RetroArch/RetroArch_iOS.h

@@ -17,6 +17,7 @@
 @property (strong, nonatomic) NSString *nib_name;
 @property (strong, nonatomic) UIImage* file_icon;
 @property (strong, nonatomic) UIImage* folder_icon;
+@property (strong, nonatomic) UIBarButtonItem* settings_button;
 
 @property const char* system_directory;
 

ios/RetroArch/RetroArch_iOS.m

@@ -34,9 +34,16 @@ extern uint32_t ios_current_touch_count ;
    bool is_iphone = [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone;
    self.nib_name = is_iphone ? @"ViewController_iPhone" : @"ViewController_iPad";
    
+   // Load icons
    self.file_icon = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"ic_file" ofType:@"png"]];
    self.folder_icon = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"ic_dir" ofType:@"png"]];
 
+   // Load buttons
+   self.settings_button = [[UIBarButtonItem alloc]
+                          initWithTitle:@"Settings"
+                          style:UIBarButtonItemStyleBordered
+                          target:nil action:nil];
+
 
    self.navigator = [[UINavigationController alloc] initWithNibName:self.nib_name bundle:nil];
    [self.navigator pushViewController: [[module_list alloc] initWithNibName:self.nib_name bundle:nil] animated:YES];

ios/RetroArch/directory_list.m

@@ -25,7 +25,7 @@
    free(path);
    path = strdup(directory);
    
-   [self setTitle: [[NSString alloc] initWithUTF8String:directory]];
+   [self setTitle: [[[NSString alloc] initWithUTF8String:directory] lastPathComponent]];
    
    return self;
 }
@@ -44,11 +44,7 @@
    table.dataSource = self;
    table.delegate = self;
 
-   self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc]
+   self.navigationItem.rightBarButtonItem = [RetroArch_iOS get].settings_button;
-                                            initWithTitle:@"Parent"
-                                            style:UIBarButtonItemStyleBordered
-                                            target:nil action:nil];
-
 
    self.view = table;
 }

ios/RetroArch/module_list.m

@@ -50,10 +50,7 @@
    table.delegate = self;
    self.view = table;
 
-   self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc]
+   self.navigationItem.rightBarButtonItem = [RetroArch_iOS get].settings_button;
-                                            initWithTitle:@"Parent"
-                                            style:UIBarButtonItemStyleBordered
-                                            target:nil action:nil];
 }
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath