style(component): Update global Handsontable css
style(component): Update global Handsontable css

Uses handsontable@0.38.0 css for now. Not ideal, as the user may
be using a different version of Handsontable! Tracked in
https://github.com/valor-software/ng2-handsontable/issues/500.

valor-software/ng2-handsontable,valor-software/ng2-handsontable