Add patch file to selectively disable campaigns on compile

Simply disable related items from AndroidManifest and that
should be more than enough

Change-Id: I3b68721f86d3ab3be953387641aa4145e0b098af

disable-campaigns.patch

@@ -0,0 +1,51 @@
+diff --git a/commons/AndroidManifest.xml b/commons/AndroidManifest.xml
+index 5ad1c77..50b16ff 100644
+--- a/commons/AndroidManifest.xml
++++ b/commons/AndroidManifest.xml
+@@ -82,14 +82,6 @@
+             android:label="@string/title_activity_settings"
+             />
+         <activity android:name=".AboutActivity" android:label="@string/title_activity_about"/>
+-        <activity android:name=".campaigns.CampaignActivity" android:label="Campaigns"
+-                android:icon="@drawable/ic_launcher"
+-                >
+-            <intent-filter>
+-                <action android:name="android.intent.action.MAIN"/>
+-                <category android:name="android.intent.category.LAUNCHER"/>
+-            </intent-filter>
+-        </activity>
+
+         <service android:name=".upload.UploadService" >
+         </service>
+@@ -106,17 +98,6 @@
+                 android:resource="@xml/authenticator" />
+         </service>
+         <service
+-                android:name=".campaigns.CampaignsSyncService"
+-                android:exported="true">
+-            <intent-filter>
+-                <action
+-                        android:name="android.content.SyncAdapter" />
+-            </intent-filter>
+-            <meta-data
+-                    android:name="android.content.SyncAdapter"
+-                    android:resource="@xml/campaigns_sync_adapter" />
+-        </service>
+-        <service
+                 android:name=".contributions.ContributionsSyncService"
+                 android:exported="true">
+             <intent-filter>
+@@ -148,13 +129,6 @@
+                 android:exported="false">
+         </provider>
+         <provider
+-                android:name=".campaigns.CampaignsContentProvider"
+-                android:label="@string/provider_campaigns"
+-                android:syncable="true"
+-                android:authorities="org.wikimedia.commons.campaigns.contentprovider"
+-                android:exported="false">
+-        </provider>
+-        <provider
+                 android:name=".modifications.ModificationsContentProvider"
+                 android:label="@string/provider_modifications"
+                 android:syncable="true"