Force reload modules, added view if modules are not found, show progress dialog when granting root

app/src/main/res/layout/single_module_fragment.xml

@@ -11,4 +11,16 @@
         android:layout_height="match_parent"
         app:layoutManager="android.support.v7.widget.LinearLayoutManager"/>
 
+    <TextView
+        android:id="@+id/empty_rv"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"
+        android:fontFamily="sans-serif-light"
+        android:gravity="center"
+        android:text="@string/no_modules_found"
+        android:textSize="20sp"
+        android:textStyle="italic"
+        android:visibility="gone"/>
+
 </LinearLayout>

app/src/main/res/menu/menu_modules.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/force_reload"
+        android:icon="@drawable/ic_refresh"
+        android:title="@string/force_reload"
+        app:showAsAction="always"/>
+
+</menu>

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

@@ -46,5 +46,8 @@
     <string name="app_source_code">Source code</string>
     <string name="app_translators">App\'s translators</string>
     <string name="support_thread">Support thread</string>
+    <string name="force_reload">Refresh</string>
+    <string name="no_modules_found">No modules found</string>
+    <string name="loading">Loading…</string>
 
 </resources>