TextActor - New constructor with a parameter object replaces previous constructors.

TextActor - New constructor with a parameter object replaces previous constructors.

The isLeftToRight parameter has been removed.

Text - New constructor with a const char* parameter to allow Text::New( "Hello" ) or TextActor::New( "world." ), ...

This new constructor allows to remove duplicated methods from public API, using std::string or Character as text parameter:
  Font::GetFamilyForText()
  Font::MeasureTextWidth()
  Font::MeasureTextHeight()
  Font::MeasureText()
  Font::AllGlyphsSupported()
  Text::SetText()
  TextActor::SetText()

Duplicated text related internal methods( with std::string, Text and Character parameters ) have been removed in Text, Font and TextActor.

Removed text style deprecated methods.

Change-Id: Ic0c24bcc8825902eceda713c7dbb41cee683be24
Signed-off-by: Victor Cebollada <v.cebollada@samsung.com>