Fix paddings in RTL layouts.

When specifying both paddingStart and paddingLeft for backwards
compatibility, you also need to explicity specify paddingEnd and
paddingRight. Otherwise, in RTL mode, Android will apply the padding to
both start (right) and left.

The messaging layouts have similar issues, but I didn't know how to test
them.

Test: Manually on an emulator.

Change-Id: I1e5c0a941656741cf6cc2f144a570248511e7fc6

diff --git a/slices/view/src/main/res/layout/abc_slice_grid_see_more.xml b/slices/view/src/main/res/layout/abc_slice_grid_see_more.xml
index 86294b6..9748f94 100644
--- a/slices/view/src/main/res/layout/abc_slice_grid_see_more.xml
+++ b/slices/view/src/main/res/layout/abc_slice_grid_see_more.xml

@@ -20,7 +20,9 @@
               android:layout_width="wrap_content"
               android:layout_height="match_parent"
               android:paddingEnd="@dimen/abc_slice_grid_gutter"
-              android:paddingRight="@dimen/abc_slice_grid_gutter">
+              android:paddingRight="@dimen/abc_slice_grid_gutter"
+              android:paddingStart="0dp"
+              android:paddingLeft="0dp">
 
     <TextView android:id="@+id/text_see_more_count"
               android:layout_width="@dimen/abc_slice_small_image_size"

diff --git a/slices/view/src/main/res/layout/abc_slice_small_template.xml b/slices/view/src/main/res/layout/abc_slice_small_template.xml
index 5427629..0f841d8 100644
--- a/slices/view/src/main/res/layout/abc_slice_small_template.xml
+++ b/slices/view/src/main/res/layout/abc_slice_small_template.xml

@@ -37,7 +37,9 @@
             android:gravity="start|center_vertical"
             android:orientation="horizontal"
             android:paddingEnd="12dp"
-            android:paddingRight="12dp"/>
+            android:paddingRight="12dp"
+            android:paddingStart="0dp"
+            android:paddingLeft="0dp"/>
 
         <LinearLayout
             android:id="@android:id/content"
@@ -98,6 +100,8 @@
             android:layout_height="wrap_content"
             android:paddingStart="8dp"
             android:paddingLeft="8dp"
+            android:paddingEnd="0dp"
+            android:paddingRight="0dp"
             android:gravity="end|center_vertical"
             android:orientation="horizontal"
             android:visibility="gone"/>