oneDrive: fix display after login

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

Sources/VLCCloudServicesTableViewController.m

@@ -126,7 +126,7 @@
         }
         case 3: {
             //OneDrive
-            BOOL isAuthorized = [[VLCOneDriveController sharedInstance] activeSession];
+            BOOL isAuthorized = [[VLCOneDriveController sharedInstance] isAuthorized];
             cell.icon.image = [UIImage imageNamed:@"OneDrive"];
             cell.cloudTitle.text = @"OneDrive";
             cell.cloudInformation.text = isAuthorized ? NSLocalizedString(@"LOGGED_IN", "") : NSLocalizedString(@"LOGIN", "");

Sources/VLCOneDriveTableViewController.m

@@ -47,6 +47,7 @@
 {
     [super viewWillAppear:animated];
     [self updateViewAfterSessionChange];
+    self.authorizationInProgress = NO;
 }
 
 #pragma mark - generic interface interaction
@@ -117,7 +118,11 @@
 
 - (void)loginAction:(id)sender
 {
-    [_oneDriveController login];
+    if (![_oneDriveController isAuthorized]) {
+        self.authorizationInProgress = YES;
+        [_oneDriveController login];
+    } else
+        [_oneDriveController logout];
 }
 
 #pragma mark - onedrive controller delegation