Layout fixes.

Layout fixes.

* Fixes some alignment issues with RTL text.

* Reorders the RTL lines while the text is laid-out.
  It might happen that the length of the text changes after
  the reordering. In that case if the lines are reordered
  outside the layout engine update the lenght at that
  step is too late.

Change-Id: If7b3bf488bde75c538a646aa48b7dfe3083597b8
Signed-off-by: Victor Cebollada <v.cebollada@samsung.com>