Tobias Deiminger authored Aug 25, 2018 and Albert Astals Cid committed Sep 02, 2018

Make fontTag optional for AnnotFreeText::parseAppearanceString.
Handle fontColor == nullptr in AnnotFreeText::constructAppearanceString.
Use AnnotAppearanceBuilder in AnnotFreeText::constructAppearanceString.
Delete copy assignment operator for DefaultAppearance.
Rename setAppearanceString to setDefaultAppearance.