Fix layouts errors and warnings

VectorDrawables could make the app crash or could be badly rendered
under particular circumstances

Change-Id: Id944358ad984e719750ea72e2a01b7b569876d49
Reviewed-by: Philippe Gorley <philippe.gorley@savoirfairelinux.com>
diff --git a/ring-android/app/src/main/res/layout-w720dp-land/activity_home.xml b/ring-android/app/src/main/res/layout-w720dp-land/activity_home.xml
index 91ddc05..ee52dbb 100644
--- a/ring-android/app/src/main/res/layout-w720dp-land/activity_home.xml
+++ b/ring-android/app/src/main/res/layout-w720dp-land/activity_home.xml
@@ -34,13 +34,13 @@
         android:id="@+id/content_frame"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:paddingLeft="@dimen/drawer_content_padding">
+        android:paddingEnd="0dp"
+        android:paddingStart="@dimen/drawer_content_padding">
 
         <android.support.v7.widget.Toolbar
             android:id="@+id/main_toolbar"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_alignParentLeft="true"
             android:layout_alignParentStart="true"
             android:layout_alignParentTop="true"
             android:background="@color/color_primary_light"
@@ -62,7 +62,8 @@
             android:elevation="@dimen/toolbar_elevation"
             android:gravity="center_vertical"
             android:orientation="horizontal"
-            android:paddingLeft="@dimen/toolbar_content_inset"
+            android:paddingEnd="0dp"
+            android:paddingStart="@dimen/toolbar_content_inset"
             android:visibility="gone">
 
             <TextView
@@ -79,7 +80,6 @@
             android:id="@+id/main_frame"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:layout_alignParentLeft="true"
             android:layout_alignParentStart="true"
             android:layout_below="@+id/toolbar_spacer"
             android:orientation="vertical" />
@@ -89,10 +89,8 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_alignBottom="@+id/toolbar_spacer"
-            android:layout_alignParentLeft="true"
             android:layout_alignParentStart="true"
             android:layout_marginBottom="@dimen/action_button_bpadding"
-            android:layout_marginLeft="@dimen/action_button_lpadding"
             android:layout_marginStart="@dimen/action_button_lpadding"
             android:adjustViewBounds="false"
             android:baselineAlignBottom="false"