Finish update to androidx

app/src/androidTest/java/org/libre/agosto/p2play/ExampleInstrumentedTest.kt

@@ -1,24 +0,0 @@
-package org.libre.agosto.p2play
-
-import android.support.test.InstrumentationRegistry
-import android.support.test.runner.AndroidJUnit4
-
-import org.junit.Test
-import org.junit.runner.RunWith
-
-import org.junit.Assert.*
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
-    @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getTargetContext()
-        assertEquals("org.libre.agosto.p2play", appContext.packageName)
-    }
-}

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

@@ -141,7 +141,7 @@
                     tools:layout_editor_absoluteY="214dp" />
             </FrameLayout>
 
-            <android.support.v7.widget.RecyclerView
+            <androidx.recyclerview.widget.RecyclerView
                 android:id="@+id/listVideosChannel"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"

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

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
@@ -48,4 +48,4 @@
                 android:maxLines="10" />
         </LinearLayout>
     </LinearLayout>
-</android.support.constraint.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>