diff --git a/app/src/main/res/drawable-v21/ic_menu_camera.xml b/app/src/main/res/drawable-v21/ic_menu_camera.xml
deleted file mode 100644
index 0d9ea10..0000000
--- a/app/src/main/res/drawable-v21/ic_menu_camera.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M12,12m-3.2,0a3.2,3.2 0,1 1,6.4 0a3.2,3.2 0,1 1,-6.4 0" />
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M9,2L7.17,4H4c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2V6c0,-1.1 -0.9,-2 -2,-2h-3.17L15,2H9zm3,15c-2.76,0 -5,-2.24 -5,-5s2.24,-5 5,-5 5,2.24 5,5 -2.24,5 -5,5z" />
-</vector>
diff --git a/app/src/main/res/drawable-v21/ic_menu_gallery.xml b/app/src/main/res/drawable-v21/ic_menu_gallery.xml
deleted file mode 100644
index f6872c4..0000000
--- a/app/src/main/res/drawable-v21/ic_menu_gallery.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M22,16V4c0,-1.1 -0.9,-2 -2,-2H8c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2zm-11,-4l2.03,2.71L16,11l4,5H8l3,-4zM2,6v14c0,1.1 0.9,2 2,2h14v-2H4V6H2z" />
-</vector>
diff --git a/app/src/main/res/drawable-v21/ic_menu_manage.xml b/app/src/main/res/drawable-v21/ic_menu_manage.xml
deleted file mode 100644
index c1be60b..0000000
--- a/app/src/main/res/drawable-v21/ic_menu_manage.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M22.7,19l-9.1,-9.1c0.9,-2.3 0.4,-5 -1.5,-6.9 -2,-2 -5,-2.4 -7.4,-1.3L9,6 6,9 1.6,4.7C0.4,7.1 0.9,10.1 2.9,12.1c1.9,1.9 4.6,2.4 6.9,1.5l9.1,9.1c0.4,0.4 1,0.4 1.4,0l2.3,-2.3c0.5,-0.4 0.5,-1.1 0.1,-1.4z" />
-</vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable-v21/ic_menu_send.xml b/app/src/main/res/drawable-v21/ic_menu_send.xml
deleted file mode 100644
index 00c668c..0000000
--- a/app/src/main/res/drawable-v21/ic_menu_send.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M2.01,21L23,12 2.01,3 2,10l15,2 -15,2z" />
-</vector>
diff --git a/app/src/main/res/drawable-v21/ic_menu_slideshow.xml b/app/src/main/res/drawable-v21/ic_menu_slideshow.xml
deleted file mode 100644
index 209aa64..0000000
--- a/app/src/main/res/drawable-v21/ic_menu_slideshow.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M4,6H2v14c0,1.1 0.9,2 2,2h14v-2H4V6zm16,-4H8c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2V4c0,-1.1 -0.9,-2 -2,-2zm-8,12.5v-9l6,4.5 -6,4.5z" />
-</vector>
diff --git a/app/src/main/res/drawable/ic_schedule.xml b/app/src/main/res/drawable/ic_schedule.xml
deleted file mode 100644
index fdcce49..0000000
--- a/app/src/main/res/drawable/ic_schedule.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8zM12.5,7L11,7v6l5.25,3.15 0.75,-1.23 -4.5,-2.67z"/>
-</vector>
diff --git a/app/src/main/res/layout/fragment_mod_detail.xml b/app/src/main/res/layout/fragment_mod_detail.xml
index 2ee206d..eb02f0b 100644
--- a/app/src/main/res/layout/fragment_mod_detail.xml
+++ b/app/src/main/res/layout/fragment_mod_detail.xml
@@ -10,7 +10,6 @@
         android:layout_height="wrap_content">
 
         <android.support.v4.view.PagerTabStrip
-            android:id="@+id/pager_header"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_gravity="top"
diff --git a/app/src/main/res/layout/fragment_modules.xml b/app/src/main/res/layout/fragment_modules.xml
deleted file mode 100644
index ba5b613..0000000
--- a/app/src/main/res/layout/fragment_modules.xml
+++ /dev/null
@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:orientation="horizontal">
-
-    <TextView
-        android:id="@+id/id"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_margin="@dimen/text_margin"
-        android:textAppearance="?attr/textAppearanceListItem" />
-
-    <TextView
-        android:id="@+id/content"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_margin="@dimen/text_margin"
-        android:textAppearance="?attr/textAppearanceListItem" />
-</LinearLayout>
diff --git a/app/src/main/res/layout/nav_header_main.xml b/app/src/main/res/layout/nav_header_main.xml
index 62c60d3..023450f 100644
--- a/app/src/main/res/layout/nav_header_main.xml
+++ b/app/src/main/res/layout/nav_header_main.xml
@@ -16,7 +16,6 @@
 
 
     <ImageView
-        android:id="@+id/imageView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         app:srcCompat="@mipmap/ic_launcher"
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index 640556d..7adfc41 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -4,6 +4,5 @@
     <dimen name="activity_vertical_margin">16dp</dimen>
     <dimen name="nav_header_vertical_spacing">16dp</dimen>
     <dimen name="nav_header_height">170dp</dimen>
-    <dimen name="fab_margin">16dp</dimen>
     <dimen name="text_margin">16dp</dimen>
 </resources>
diff --git a/app/src/main/res/values/drawables.xml b/app/src/main/res/values/drawables.xml
index 9036d27..248b7a4 100644
--- a/app/src/main/res/values/drawables.xml
+++ b/app/src/main/res/values/drawables.xml
@@ -1,8 +1,3 @@
 <resources>
-    <item name="ic_menu_camera" type="drawable">@android:drawable/ic_menu_camera</item>
-    <item name="ic_menu_gallery" type="drawable">@android:drawable/ic_menu_gallery</item>
-    <item name="ic_menu_slideshow" type="drawable">@android:drawable/ic_menu_slideshow</item>
-    <item name="ic_menu_manage" type="drawable">@android:drawable/ic_menu_manage</item>
     <item name="ic_menu_share" type="drawable">@android:drawable/ic_menu_share</item>
-    <item name="ic_menu_send" type="drawable">@android:drawable/ic_menu_send</item>
 </resources>