Optimize imports. Keep tracking of every subscription

app/src/main/java/eu/kanade/mangafeed/ui/activity/CatalogueListActivity.java

@@ -33,7 +33,7 @@ public class CatalogueListActivity extends BaseActivity implements CatalogueList
         setupToolbar(toolbar);
 
         presenter = new CatalogueListPresenter(this);
-        presenter.initializeSource();
+        presenter.initialize();
     }
 
     @Override

app/src/main/java/eu/kanade/mangafeed/ui/activity/MainActivity.java

@@ -15,7 +15,6 @@ import butterknife.ButterKnife;
 import eu.kanade.mangafeed.R;
 import eu.kanade.mangafeed.ui.fragment.CatalogueFragment;
 import eu.kanade.mangafeed.ui.fragment.LibraryFragment;
-import rx.subscriptions.CompositeSubscription;
 
 public class MainActivity extends BaseActivity {
 

app/src/main/java/eu/kanade/mangafeed/ui/activity/MangaDetailActivity.java

@@ -4,8 +4,6 @@ import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.v7.widget.Toolbar;
-import android.view.Menu;
-import android.view.MenuItem;
 import android.widget.ListView;
 
 import java.util.List;

app/src/main/java/eu/kanade/mangafeed/ui/adapter/LibraryAdapter.java

@@ -4,7 +4,6 @@ import android.content.Context;
 import android.widget.Filter;
 import android.widget.Filterable;
 
-import java.util.ArrayList;
 import java.util.List;
 
 import eu.kanade.mangafeed.data.models.Manga;

app/src/main/java/eu/kanade/mangafeed/ui/fragment/LibraryFragment.java

@@ -50,7 +50,7 @@ public class LibraryFragment extends BaseFragment implements LibraryView {
         activity.setToolbarTitle(getString(R.string.library_title));
         ButterKnife.bind(this, view);
 
-        presenter.initializeMangas();
+        presenter.initialize();
 
         return view;
     }