New UI: Correct tab bar height & fix background

Signed-off-by: Fung <fython@163.com>

Author: fython

mobile/src/main/res/layout/activity_main.xml

@@ -8,7 +8,8 @@
 
 	<android.support.design.widget.AppBarLayout
 		android:layout_width="match_parent"
-	    android:layout_height="wrap_content">
+	    android:layout_height="wrap_content"
+		android:background="?attr/colorPrimary">
 
 		<android.support.v7.widget.CardView
 				android:id="@+id/toolbar_box"
@@ -55,9 +56,8 @@
 
 		<android.support.design.widget.TabLayout
 			android:layout_width="match_parent"
-			android:layout_height="?attr/actionBarSize"
+			android:layout_height="@dimen/tab_bar_height"
 			android:id="@+id/tab_layout"
-			android:background="?attr/colorPrimary"
 			app:layout_scrollFlags="snap"
 			app:tabTextColor="@color/grey_100"
 			app:tabSelectedTextColor="@android:color/white"

mobile/src/main/res/values/dimens.xml

@@ -2,6 +2,7 @@
 <resources>
 
 	<dimen name="toolbar_size">56dp</dimen>
+	<dimen name="tab_bar_height">48dp</dimen>
 
 	<!-- Add package -->
 	<dimen name="parallax_app_bar_size">240dp</dimen>