Added insert/delete/hide/show/optimal width or height
/adjust width or heigth  to Calc. These options
show in a floating menu near the headers when the
user taps on the headers. Also added selection on
headers, i.e., user can drag on headers to select
multiple columns/rows.

Change-Id: I7e1994d1fa81d80c110def035c2c065e838b49ac
Reviewed-on: https://gerrit.libreoffice.org/40684Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>