Numerical value entry half done

Still fixing errors.
Numerical value entry done
Deleted replica code in calculation.js
Sliders numerical value entry done

Both sliders and text boxes work perfectly.
Sliders numerical value entry done

Sliders and text boxes are working perfectly.
Merge branch 'master' into jingxian2
Code review for inputing numbers in slider number box.
Removed extra copy
Code review for allowing text input of values in graph and table
Merge branch 'jingxian2'