Cursor position after calling setContents(delta) #1367

[nipunjain87]

Resolving this issue has created another issue.
If we add an image to rich-text-editor using image toolbar, the cursor should move at end of image. But it is maintaining it's position.
This is not user friendly as user normally moves forward and he/she will have to manually click after the
image to continue adding content.

Compare below mentioned pens:-

Version 1.2.5: https://codepen.io/anon/pen/qXVoJN
version 1.2.2: http://codepen.io/anon/pen/KWXwgw

Steps:
Place the cusror somewhere in editor.
Upload image using image toolbar
In Pen1, the cursor will remain at its position, while in pen2, it would go after image.
This issue was not present in build no 1.2.4 and got introduced in 1.2.5.