Fixed review notes - renamed transparent bg btn

https://github.com/mapsme/omim/pull/11989#discussion_r340052298

android/res/drawable-v21/button_secondary_transparent.xml

@@ -3,5 +3,5 @@
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:color="?attr/colorBtnHighlight">
   <item android:drawable="@drawable/ripple_mask" />
-  <item android:drawable="@drawable/button_primary_transparent_internal" />
+  <item android:drawable="@drawable/button_secondary_transparent_internal" />
 </ripple>

android/res/drawable/button_primary_transparent_internal.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-  <item android:drawable="@drawable/button_primary_transparent_pressed" android:state_pressed="true" />
-  <item android:drawable="@drawable/button_primary_transparent_normal" />
-</selector>

android/res/drawable/button_secondary_transparent.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layer-list
   xmlns:android="http://schemas.android.com/apk/res/android">
-  <item android:drawable="@drawable/button_primary_transparent_internal" />
+  <item android:drawable="@drawable/button_secondary_transparent_internal" />
 </layer-list>

android/res/drawable/button_secondary_transparent_internal.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+  <item android:drawable="@drawable/button_secondary_transparent_pressed" android:state_pressed="true" />
+  <item android:drawable="@drawable/button_secondary_transparent_normal" />
+</selector>