[REVIEW 3-5] SVG import improvements

[Christina Roßmanith]

Hi,

commit 79a6e40e6f19a896dbc25640deb3d4507eddad95 clamps FillOpacity to 1
and
commit 7c11471666f92e9dfecbec23ebe73bcb0177a963 enables parsing of 
percent color specifications like rgb(50%,20%,10%)

Christina