Insert profile creation into registration flow, fix capture

// FREEBIE

src/org/thoughtcrime/securesms/profiles/AvatarHelper.java

@@ -0,0 +1,49 @@
+package org.thoughtcrime.securesms.profiles;
+
+
+import android.content.Context;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+
+import org.thoughtcrime.securesms.database.Address;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+public class AvatarHelper {
+
+  private static final String AVATAR_DIRECTORY = "avatars";
+
+  public static InputStream getInputStreamFor(@NonNull Context context, @NonNull Address address)
+      throws IOException
+  {
+    return new FileInputStream(getAvatarFile(context, address));
+  }
+
+  public static void delete(@NonNull Context context, @NonNull Address address) {
+    getAvatarFile(context, address).delete();
+  }
+
+  public static @NonNull File getAvatarFile(@NonNull Context context, @NonNull Address address) {
+    File avatarDirectory = new File(context.getFilesDir(), AVATAR_DIRECTORY);
+    avatarDirectory.mkdirs();
+
+    return new File(avatarDirectory, new File(address.serialize()).getName());
+  }
+
+  public static void setAvatar(@NonNull Context context, @NonNull Address address, @Nullable byte[] data)
+    throws IOException
+  {
+    if (data == null)  {
+      delete(context, address);
+    } else {
+      FileOutputStream out = new FileOutputStream(getAvatarFile(context, address));
+      out.write(data);
+      out.close();
+    }
+  }
+
+}

src/org/thoughtcrime/securesms/profiles/AvatarPhotoUriFetcher.java

@@ -28,10 +28,8 @@ public class AvatarPhotoUriFetcher implements DataFetcher<InputStream> {
   }
 
   @Override
-  public InputStream loadData(Priority priority) throws FileNotFoundException {
-    File avatarsDir = new File(context.getFilesDir(), "avatars");
-    inputStream = new FileInputStream(new File(avatarsDir, address.serialize()));
-
+  public InputStream loadData(Priority priority) throws IOException {
+    inputStream = AvatarHelper.getInputStreamFor(context, address);
     return inputStream;
   }