Adding Calc UI. Two blank views are added as
row and column headers. CommonCanvasElement
is used to draw header cells on the views. [WIP]

Change-Id: I37eaa82805045ab650fd127e54c8421c61a4ea27
Reviewed-on: https://gerrit.libreoffice.org/38936Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Tomaž Vajngerl <quikee@gmail.com>