* Macro _LC is changed to _CHB. [to put translated string into std::string correctly]
* Macro _LS is changed to L. [to mark string to translation]
* Standard wxWidgets macro _() is used for translation now.
* Updated POfile for EN
* m_Local and its functions moved to GUI.cpp.
* Strings in some files(GUI.cpp, Tab.cpp, Tab.hpp & Field.cpp) marked by _L() macro.
* Updated mo-files for En and Uk languages.
Added some functions to TabIface.
Added BedShapeDialog & Bed2D classes.
Added new_scale to Polygon.
In class Field: Point renamed to PointCtrl and added set_value for PointCtrl, extended get_value for Choice.