Fixed app flow. fixes #42. (#43)

fixes #42

Author: octacode

src/main/java/org/amahi/anywhere/activity/ServerFilesActivity.java

@@ -242,7 +242,7 @@ private void startFileSharingActivity(ServerShare share, ServerFile file) {
 	public boolean onOptionsItemSelected(MenuItem menuItem) {
 		switch (menuItem.getItemId()) {
 			case android.R.id.home:
-				finish();
+				onBackPressed();
 				return true;
 
 			default: