OXYGEN: Refreshing icons from main source and added a few new ones

Change-Id: I7c5ca8cb9533a1df07a86909a6993bc36eda5253
Reviewed-on: https://gerrit.libreoffice.org/12129
Reviewed-by: Matthew Francis <mjay.francis@gmail.com>
Tested-by: Matthew Francis <mjay.francis@gmail.com>