Milestone#2

[hyyan]

Changelog

• Update to Ag Grid 20 (Fixs grid option suppressFilter is removed #101 , Fixs grid option enableColResize is removed #98 , Fixs grid option enableFilter is removed #97 , Fixs grid option enableSorting is removed #96 , Fixs Update to Ag Grid 20 #93 )
• Now every javascript accepts a grid id to identify events and callbacks.
  This is required in BUI because it uses one window instance , GUI uses a differnt window instance for every new grid so it is not a problem ( Fixs Two grid instances can NOT live together in BUI #92 , Fixs BUI: ON_GRID_SELECT_ROW event attached to the wrong grid instance if there is more than one grid on the window #90) .
• Improve webpack performance , and build the unminifed files to be servered when the Grid debug is enabled (Fixs Improve Webpack build performance  #94 )