Several renames for consistency. Should help with fragmentizing afterwards

TwelveKeyDialer ==> DialpadActivity
RecentCallsListActivity ==> CallLogActivity (be consistent with tab name)

Renamed xml files to have a clearer connection to the object that they
represent

Change-Id: Ie4f123dc03a445596e5ecc216adfef61275dbea3
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 458553e..d3a9b63 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -45,9 +45,11 @@
         android:hardwareAccelerated="true"
     >
 
-        <!-- A virtual 12 key dialer -->
-        <activity android:name="TwelveKeyDialer"
+        <!-- A virtual 12 key dialer. This definition is only used internally, so that we can use
+             the activity inside of a TabActivity -->
+        <activity android:name=".activities.DialpadActivity"
             android:launchMode="singleTop"
+            android:exported="false"
         >
             <intent-filter>
                 <action android:name="com.android.phone.action.TOUCH_DIALER" />
@@ -56,9 +58,11 @@
             </intent-filter>
         </activity>
 
-        <!-- A list of recent calls -->
-        <activity android:name="RecentCallsListActivity"
+        <!-- A list of recent calls. This definition is only used internally, so that we can use
+             the activity inside of a TabActivity -->
+        <activity android:name=".activities.CallLogActivity"
             android:label="@string/recentCallsIconLabel"
+            android:exported="false"
         >
             <intent-filter>
                 <action android:name="com.android.phone.action.RECENT_CALLS" />
@@ -119,7 +123,7 @@
         </activity>
 
         <!-- Tab container for all tabs -->
-        <activity android:name="DialtactsActivity"
+        <activity android:name=".activities.DialtactsActivity"
             android:label="@string/launcherDialer"
             android:theme="@style/DialtactsTheme"
             android:launchMode="singleTask"