Fix *.love file association in Nougat and later.

Note that the file association is rather hacky but I can't find any method
which is compatible in Nougat and later as file:// URI is banned there.

app/src/main/AndroidManifest.xml

@@ -3,7 +3,7 @@
       android:installLocation="auto" xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.VIBRATE"/>
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="18" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="18" />
 
   <!-- OpenGL ES 2.0 -->
@@ -35,6 +35,22 @@
           <data android:pathPattern=".*\\.love" />
           <data android:host="*" />
         </intent-filter>
+        <intent-filter>
+          <action android:name="android.intent.action.VIEW" />
+          <category android:name="android.intent.category.DEFAULT" />
+          <category android:name="android.intent.category.BROWSABLE" />
+          <data android:scheme="content" />
+          <data android:host="*" />
+          <data android:mimeType="application/x-love-game" />
+        </intent-filter>
+        <intent-filter>
+          <action android:name="android.intent.action.VIEW" />
+          <category android:name="android.intent.category.DEFAULT" />
+          <category android:name="android.intent.category.BROWSABLE" />
+          <data android:scheme="content" />
+          <data android:host="*" />
+          <data android:mimeType="*/*" />
+        </intent-filter>
       </activity>
       <activity
         android:name="org.love2d.android.DownloadActivity"

love/src/main/java/org/love2d/android/GameActivity.java

@@ -67,6 +67,10 @@ public class GameActivity extends SDLActivity {
             Log.d("GameActivity", "Vibration disabled: could not get vibration permission.");
         }
 
+        // These 2 variables must be reset or it will use the existing value.
+        gamePath = "";
+        storagePermissionUnnecessary = false;
+
         handleIntent(this.getIntent());
 
         super.onCreate(savedInstanceState);