TextView - Right to Left implementation.

TextView - Right to Left implementation.

* Text and style is stored in the paragraph instead inside the character.
* If a paragraph has bidirectional text, it stores the
  minimum common data needed to reorder a line.
* Before creating text-actors, text-view reorders
  the bidirectional text, keeping the logical order.

Change-Id: Iff9c7e9223eb9c9a7d15b1e41cc6dc2f47096aa0
Signed-off-by: Victor Cebollada <v.cebollada@samsung.com>