-Added wake and wifi lock to popup video player.

-Added seek time display to player binding activity.
-Added button effect for all image buttons on player binding activity.
-Added click to scroll to current selected on metadata layout for player binding activity.
-Refactored player utilities and preference getters into PlayerHelper.
-Refactored player caching into CacheFactory.
-Refactored player audio related methods into AudioReactor.
-Refactored player locks into LockManager.
-Refactored player loading and buffering mechanics into LoadController.
-Fixed outdated names for background player.

app/src/main/res/layout/player_popup_notification.xml

@@ -7,6 +7,7 @@
     android:layout_height="64dp"
     android:background="@color/background_notification_color"
     android:clickable="true"
+    android:focusable="true"
     android:gravity="center_vertical"
     android:orientation="horizontal">
 
@@ -54,6 +55,7 @@
         android:layout_height="match_parent"
         android:background="#00000000"
         android:clickable="true"
+        android:focusable="true"
         android:padding="5dp"
         android:scaleType="fitCenter"
         android:src="@drawable/ic_repeat_white"
@@ -65,6 +67,7 @@
         android:layout_height="match_parent"
         android:background="#00000000"
         android:clickable="true"
+        android:focusable="true"
         android:src="@drawable/ic_pause_white"
         tools:ignore="ContentDescription"/>
 
@@ -75,6 +78,7 @@
         android:layout_marginLeft="5dp"
         android:background="#00000000"
         android:clickable="true"
+        android:focusable="true"
         android:padding="5dp"
         android:scaleType="fitCenter"
         android:src="@drawable/ic_close_white_24dp"