added basic subscriptions support for playlists and channels

update youtube-dl binary on windows

updated favicon to the new icon

src/app/dialogs/subscription-info-dialog/subscription-info-dialog.component.ts

@@ -0,0 +1,32 @@
+import { Component, OnInit, Inject } from '@angular/core';
+import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
+import { PostsService } from 'app/posts.services';
+
+@Component({
+  selector: 'app-subscription-info-dialog',
+  templateUrl: './subscription-info-dialog.component.html',
+  styleUrls: ['./subscription-info-dialog.component.scss']
+})
+export class SubscriptionInfoDialogComponent implements OnInit {
+
+  sub = null;
+  unsubbedEmitter = null;
+
+  constructor(public dialogRef: MatDialogRef<SubscriptionInfoDialogComponent>,
+    @Inject(MAT_DIALOG_DATA) public data: any, private postsService: PostsService) { }
+
+  ngOnInit() {
+    if (this.data) {
+      this.sub = this.data.sub;
+      this.unsubbedEmitter = this.data.unsubbedEmitter;
+    }
+  }
+
+  unsubscribe() {
+    this.postsService.unsubscribe(this.sub, true).subscribe(res => {
+      this.unsubbedEmitter.emit(true);
+      this.dialogRef.close();
+    });
+  }
+
+}