Fixed various lint issues

Signed-off-by: Ricky Barrette <rickbarrette@gmail.com>

LocationRinger/res/layout/feature_title_bar.xml

@@ -1,9 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:background="@android:drawable/title_bar"
-    android:orientation="horizontal" >
+    android:orientation="horizontal"
+    tools:ignore="ContentDescription" >
 
     <ImageButton
         android:id="@+id/close"
@@ -18,7 +20,6 @@
         android:layout_height="wrap_content"
         android:layout_centerHorizontal="true"
         android:layout_centerVertical="true"
-        android:text="test"
         android:textColor="#FFFFFF" />
 
     <ImageView
@@ -27,6 +28,7 @@
         android:layout_height="wrap_content"
         android:layout_alignParentLeft="true"
         android:layout_centerVertical="true"
+        android:contentDescription="@string/delete"
         android:src="@android:drawable/stat_sys_data_bluetooth" />
 
 </RelativeLayout>