-Added ability to save playlist as remote playlist link rather than storing it in database.

-Added LeakCanary as part of debug build.
-Modified bookmark list to show both remote and local playlists.
-Removed ability to save channel items as local playlist, in favor of subscribe.

app/src/main/res/values/attrs.xml

@@ -27,7 +27,8 @@
     <attr name="ic_hot" format="reference"/>
     <attr name="ic_channel" format="reference"/>
     <attr name="ic_bookmark" format="reference"/>
-    <attr name="playlist_add" format="reference"/>
+    <attr name="ic_playlist_add" format="reference"/>
+    <attr name="ic_playlist_check" format="reference"/>
 
     <!-- Can't refer to colors directly into drawable's xml-->
     <attr name="toolbar_shadow_drawable" format="reference"/>