issue_80: Rageshake handling

Rageshake doesn't work on the image upload screen #80

- Define the navigation bar tint color.
- Disable navigation bar tint color change according to HS status.
- Set RageShake manager.

Vector/ViewController/DirectoryViewController.m

@@ -20,6 +20,10 @@
 
 #import "AppDelegate.h"
 
+#import "VectorDesignValues.h"
+
+#import "RageShakeManager.h"
+
 @interface DirectoryViewController ()
 {
     PublicRoomsDirectoryDataSource *dataSource;
@@ -32,6 +36,11 @@
 - (void)viewDidLoad
 {
     [super viewDidLoad];
+    
+    // Setup `MXKViewControllerHandling` properties
+    self.defaultBarTintColor = kVectorNavBarTintColor;
+    self.enableBarTintColorStatusChange = NO;
+    self.rageShakeManager = [RageShakeManager sharedManager];
 
     self.title = NSLocalizedStringFromTable(@"directory_title", @"Vector", nil);