fdo#44081 don't remove 'edit' pop-up menu entry from form in design mode

Change-Id: I009b0e1a155c298bd7f461547125df4ba76805d9
Reviewed-on: https://gerrit.libreoffice.org/11230
Reviewed-by: Lionel Elie Mamane <lionel@mamane.lu>
Tested-by: Lionel Elie Mamane <lionel@mamane.lu>
fdo#83302 don't display read-only infobar for Base form in normal mode

Change-Id: I03c32883dbf8421824069efea2318e67c8dc4313
Reviewed-on: https://gerrit.libreoffice.org/11231
Reviewed-by: Lionel Elie Mamane <lionel@mamane.lu>
Tested-by: Lionel Elie Mamane <lionel@mamane.lu>