Changes:

- Declare RxJava as dependency
- Add a folder chooser for downloads
- Fix a force close when updating library
- Enable ACRA and add a setting to send crash reports
- Manga class now uses the default get resolver
- Other minor changes

app/src/main/res/values/styles.xml

@@ -50,6 +50,21 @@
         <item name="android:background">#e5e5e5</item>
     </style>
 
+    <style name="FilePickerTheme" parent="NNF_BaseTheme.Light">
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+        <item name="colorButtonNormal">@color/colorPrimary</item>
+        <item name="android:textSize">14sp</item>
+
+        <item name="alertDialogTheme">@style/FilePickerAlertDialogTheme</item>
+
+        <item name="nnf_toolbarTheme">@style/ThemeOverlay.AppTheme.Dark</item>
+    </style>
+
+    <style name="FilePickerAlertDialogTheme" parent="Theme.AppCompat.Light.Dialog.Alert">
+    </style>
+
     <style name="manga_detail_label">
         <item name="android:textSize">15sp</item>
         <item name="android:textStyle">bold</item>