add a Settings activity

+ allow using settings / about / license in landscape

app/src/main/AndroidManifest.xml

@@ -39,13 +39,15 @@
 
         <activity
             android:name=".LicenseActivity"
-            android:label="@string/third_party_licences"
-            android:screenOrientation="portrait"/>
+            android:label="@string/third_party_licences"/>
 
         <activity
             android:name=".AboutActivity"
-            android:label="@string/about"
-            android:screenOrientation="portrait"/>
+            android:label="@string/about"/>
+
+        <activity
+            android:name=".SettingsActivity"
+            android:label="@string/about"/>
 
         <receiver
             android:name=".HardwareShutterReceiver"

app/src/main/java/com/simplemobiletools/camera/SettingsActivity.java

@@ -0,0 +1,16 @@
+package com.simplemobiletools.camera;
+
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+
+import butterknife.ButterKnife;
+
+public class SettingsActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_settings);
+        ButterKnife.bind(this);
+    }
+}

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

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout
+    android:id="@+id/settings_holder"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_margin="@dimen/activity_margin">
+
+</RelativeLayout>