Resolves: fdo#79181 drop hidden shape and drop negative clip rect

and just resize bg to the desired size. The negative clip is getting
applied against an assumed 0,0 origin and so we're missing the bottom
of the unclipped image.

Change-Id: I9d7c5d17de15176d103690898281c6b875b560ca
missing title from extension update dialog

Change-Id: I53aae37fbdbd5ef1846332787e2b1165173b9e8a