Fix more selection trouble in iOS6 and 7 #10714

The pull request https://github.com/ckeditor/ckeditor-dev/pull/82 fixed most issues for bug [http://dev.ckeditor.com/ticket/10714](http://dev.ckeditor.com/ticket/10714), but this fixes these additional issues:

Environment: iOS6 and iOS7

A.
1. Click on a disabled button
2. Notice the cursor is blinking in the right place
3. Input some text
4. Notice text is not input

B.
1. Create a table with the table plugin
2. Cursor is blinking inside the newly created table
3. Input some text
4. Notice text is not input