Fix text selection on white spaces or new lines paragraphs.

Fix text selection on white spaces or new lines paragraphs.

  Hit character                                           Select
|-------------------------------------------------------|------------------------------------------|
| On a word                                             | The word                                 |
| On a single white space between words                 | The word before or after the white space |
| On one of the multiple contiguous white spaces        | The white spaces                         |
| On a single white space which is in the position zero | The white space and the next word        |
| On a new paragraph character                          | The word or group of white spaces before |
|-------------------------------------------------------|------------------------------------------|

Change-Id: I485221e90e716d4262c7e5fd3c114f0851e7177f
Signed-off-by: Victor Cebollada <v.cebollada@samsung.com>