Changed sharing content behavior by stripping out title string

Originally the sharing option was designed to include the title string within the content to avoid loosing it while sharing a note to messaging apps (Telegram, Whatsapp, other) but it was a workaround for all of them actually not checking the Intent.EXTRA_SUBJECT field
Closes #948

omniNotes/src/main/java/it/feio/android/omninotes/MainActivity.java

@@ -515,12 +515,6 @@ public void switchToDetail(Note note) {
 
 
   public void shareNote(Note note) {
-    String titleText = note.getTitle();
-
-    String contentText = titleText
-        + System.getProperty("line.separator")
-        + note.getContent();
-
     Intent shareIntent = new Intent();
     // Prepare sharing intent with only text
     if (note.getAttachmentsList().isEmpty()) {
@@ -558,8 +552,8 @@ public void shareNote(Note note) {
 
       shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris);
     }
-    shareIntent.putExtra(Intent.EXTRA_SUBJECT, titleText);
-    shareIntent.putExtra(Intent.EXTRA_TEXT, contentText);
+    shareIntent.putExtra(Intent.EXTRA_SUBJECT, note.getTitle());
+    shareIntent.putExtra(Intent.EXTRA_TEXT, note.getContent());
 
     startActivity(Intent.createChooser(shareIntent, getResources().getString(R.string.share_message_chooser)));
   }