Added Basic Pic Of the Day App Widget (#1523)

* Added Basic Pic Of the Day App Widget

* Added Java Lib for XML to JSON

* Added missing json library from xml to json

* Undone formatting

* Consolidate the networking libraries - drop volley in favor of OkHttp

* Extracted a few networking related items into a new Dagger module and finished the process of mocking the main component for tests.

* Refactoring to extract GpsCategoryModel and ensure single-responsibility-principle is maintained in CategoryApi.

* Updated PicOfDayAppWidget class to parse HTML

* fixed featured image back bug

* Localisation updates from https://translatewiki.net.

* Javadocs added

* Add option to set image as wallpaper (#1535)

* Add option to set image as wallpaper

* Added java docs

* Toast message on setting the wallpaper successfully

* Localisation updates from https://translatewiki.net.

* Add dependencies to com.android.support.test.rules and runner

Needed for ActivityTestRule used in SettingsActivityTest

* Added Basic Pic Of the Day App Widget

* Added Java Lib for XML to JSON

* Added missing json library from xml to json

* Undone formatting

* Updated PicOfDayAppWidget class to parse HTML

app/src/main/AndroidManifest.xml

@@ -165,6 +165,16 @@
             android:label="@string/provider_categories"
             android:syncable="false" />
 
+        <receiver android:name=".widget.PicOfDayAppWidget">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/pic_of_day_app_widget_info" />
+        </receiver>
+
     </application>
 
 </manifest>