fix (lua_table_to_json): treat lua numbers as integer or double
fix (lua_table_to_json): treat lua numbers as integer or double

- check if a lua number has a fraction

dhlab-basel/Sipi,dhlab-basel/Sipi,dhlab-basel/Sipi,dhlab-basel/Sipi,dhlab-basel/Sipi,dhlab-basel/Sipi