Remove superfluous icon and padding that came with sdk 24

Fixes signalapp/Signal-Android#5965
// FREEBIE

Upstream commit: signalapp/Signal-Android@4ff8de0

res/layout/contact_selection_activity.xml

@@ -3,15 +3,17 @@
               android:layout_height="fill_parent"
               android:layout_width="fill_parent"
               android:orientation="vertical"
-              xmlns:android="http://schemas.android.com/apk/res/android">
+              xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <android.support.v7.widget.Toolbar
             android:id="@+id/toolbar"
             android:layout_height="?attr/actionBarSize"
             android:layout_width="match_parent"
             android:minHeight="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
-            android:theme="?attr/actionBarStyle">
+            android:theme="?attr/actionBarStyle"
+            app:contentInsetStartWithNavigation="0dp">
 
         <LinearLayout android:layout_width="match_parent"
                       android:layout_height="match_parent"

src/org/smssecure/smssecure/ContactSelectionActivity.java

@@ -93,6 +93,8 @@ private void initializeToolbar() {
 
     getSupportActionBar().setDisplayHomeAsUpEnabled(false);
     getSupportActionBar().setDisplayShowTitleEnabled(false);
+    getSupportActionBar().setIcon(null);
+    getSupportActionBar().setLogo(null);
   }
 
   private void initializeResources() {

src/org/smssecure/smssecure/NewConversationActivity.java

@@ -41,7 +41,6 @@ public class NewConversationActivity extends ContactSelectionActivity {
   public void onCreate(Bundle bundle, MasterSecret masterSecret) {
     super.onCreate(bundle, masterSecret);
 
-    action.setVisibility(View.GONE);
     getSupportActionBar().setDisplayHomeAsUpEnabled(true);
   }
 

src/org/smssecure/smssecure/RecipientPreferenceActivity.java

@@ -108,6 +108,8 @@ public boolean onOptionsItemSelected(MenuItem item) {
 
   private void initializeToolbar() {
     this.toolbar = (Toolbar) findViewById(R.id.toolbar);
+    this.toolbar.setLogo(null);
+
     setSupportActionBar(toolbar);
 
     getSupportActionBar().setDisplayHomeAsUpEnabled(true);