Qt: component palette settings, icons have offset by header size

Original Reporter info from Mantis: zeljko@holobit.net @zeljan1

• Reporter name: Zeljan Rikalo

Description:

With r47922 works ok, so changes related to the issue 27509 are suspicious.

Mantis conversion info:

• Mantis ID: 27659
• Version: 1.5 (SVN)
• Fixed in version: 1.5 (SVN)
• Fixed in revision: 48303 (#c55e1a9c)
• Target version: 1.4RC2
• LazTarget: 1.4