Reduce max suggestion to show to 2.

- since we now either have 1 or 2 suggestions, putting most layout
configuration in the xml instead of dynamically setting it in code.
- remove the suggestion header
- vertical center align the suggestion title text for 2 cards to make
the card with single line looks better.
- tint all suggestions icons.

Change-Id: I0130f15d530264e164e5afd7c091f165a4a6adc2
Fixes: 70573674
Fixes: 73293989
Fixes: 64986736
Test: visual and make RunSettingsRoboTests
diff --git a/res/layout/suggestion_container.xml b/res/layout/suggestion_container.xml
index 95a00cc..ee7631d 100644
--- a/res/layout/suggestion_container.xml
+++ b/res/layout/suggestion_container.xml
@@ -23,40 +23,11 @@
     android:paddingTop="2dp"
     android:orientation="vertical">
 
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="horizontal"
-        android:gravity="center_vertical">
-
-        <TextView
-            android:id="@android:id/title"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="24dp"
-            android:layout_centerVertical="true"
-            android:gravity="start"
-            android:text="@string/suggestions_title_v2"
-            android:textAppearance="@style/TextAppearance.SuggestionHeader" />
-
-        <TextView
-            android:id="@android:id/summary"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:layout_marginEnd="24dp"
-            android:layout_centerVertical="true"
-            android:gravity="end"
-            android:textAppearance="@style/TextAppearance.SuggestionHeader" />
-
-    </LinearLayout>
-
     <android.support.v7.widget.RecyclerView
         android:id="@+id/suggestion_list"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:paddingTop="12dp"
-        android:paddingBottom="13dp"
+        android:paddingBottom="16dp"
         android:scrollbars="none"/>
 
 </LinearLayout>