Edit component in schematic: reduce length of some texts (when translated, give a too big dialog)

Eeschema: in component properties dialog, add control for fields texts justification, like in Libedit.
Fix some Doxygen warnings.

dialog_edit_component_in_schematic: moved "Reset to Library Default" Button. This command is now undoable.

translation of last french comments in dialog_edit_component_in_schematic.cpp, and minor enhancements
Update french dictionnary