Merge branch '1225-improve-setup-ux' into 'master'

Remove circle, make button flat to improve setup UX

Closes #1225

See merge request akwizgran/briar!792

briar-android/src/main/java/org/briarproject/briar/android/login/PowerView.java

@@ -89,9 +89,9 @@ abstract class PowerView extends ConstraintLayout {
 	public void setChecked(boolean checked) {
 		this.checked = checked;
 		if (checked) {
-			checkImage.setImageResource(R.drawable.ic_check_white);
+			checkImage.setVisibility(VISIBLE);
 		} else {
-			checkImage.setImageResource(R.drawable.contact_disconnected);
+			checkImage.setVisibility(INVISIBLE);
 		}
 		if (onCheckedChangedListener != null) {
 			onCheckedChangedListener.onCheckedChanged();

briar-android/src/main/res/layout/power_view.xml

@@ -20,10 +20,12 @@
 
 	<ImageView
 		android:id="@+id/checkImage"
-		android:layout_width="wrap_content"
-		android:layout_height="wrap_content"
-		android:src="@drawable/contact_disconnected"
+		android:layout_width="24dp"
+		android:layout_height="24dp"
+		android:layout_margin="8dp"
+		android:src="@drawable/ic_check_white"
 		android:tint="?colorControlNormal"
+		android:visibility="invisible"
 		app:layout_constraintBottom_toBottomOf="@+id/button"
 		app:layout_constraintStart_toStartOf="parent"
 		app:layout_constraintTop_toTopOf="@+id/button"
@@ -34,9 +36,7 @@
 		style="@style/BriarButton.Default"
 		android:layout_width="0dp"
 		android:layout_height="wrap_content"
-		android:layout_marginEnd="8dp"
-		android:layout_marginStart="8dp"
-		android:layout_marginTop="8dp"
+		android:layout_margin="8dp"
 		app:layout_constraintEnd_toStartOf="@+id/helpButton"
 		app:layout_constraintStart_toEndOf="@+id/checkImage"
 		app:layout_constraintTop_toBottomOf="@+id/textView"
@@ -44,11 +44,13 @@
 
 	<ImageButton
 		android:id="@+id/helpButton"
-		style="@style/BriarButton.Default"
-		android:layout_width="48dp"
-		android:layout_height="wrap_content"
+		style="@style/BriarButtonFlat.Positive"
+		android:layout_width="24dp"
+		android:layout_height="24dp"
+		android:layout_margin="8dp"
 		android:contentDescription="@string/help"
 		android:src="@drawable/ic_help_outline_white"
+		android:tint="@color/briar_button_positive"
 		app:layout_constraintBottom_toBottomOf="@+id/button"
 		app:layout_constraintEnd_toEndOf="parent"
 		app:layout_constraintTop_toTopOf="@+id/button"/>