Drag and drop within same note creates extra duplicate

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Create new note
2. Type in "ABC<cr><cr>" (without quotes, <cr> means carriage return so your 
note is as follows):-

-----
ABC


-----

3. Select ABC and then drag it to end of note.

What is the expected output? What do you see instead?

I expect ABC to be copied to end of document:

-----
ABC

ABC
-----

instead I get:

-----
ABCABC

ABC
-----

What version of the product are you using? On what operating system?

KeepNote 0.7.8 on Windows 7 Professional x64

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 3 Mar 2014 at 4:39