Improved icons for remote commands

New icons for push, fetch, synchronize, pull. The new icons are
contributed by Daniel Azarov.

Bug: 441253
Change-Id: I55359da9d567320f5f76c49de8388bd322cc67f2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Also-by: Daniel Azarov <daniel@exadel.com>
Add new wizard banners

The new wizbans are contributed by Daniel Azarov. Wizbans for commit and
pull are unused at the moment.

Bug: 441253
Change-Id: Ie10c8cb76cf40a7395d062526d0fc60d131c92fb
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Also-by: Daniel Azarov <daniel@exadel.com>