- draw inner pressure circle for weightpaint, vertexpaint, projectpaint modes.
- only draw pressure circle if the pressure is used for brush size.
- remove 'last-pressure' workaround for project paint, its no longer needed.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@53872 954f8c5b-7b00-dc11-b283-0030488c597c