Bug 327208: [Import/Export] Windows Explorer can't read zip when 'create only selected directories' selected
Bug 419377 - [CSS] Setting a property to 'inherit' fires a
IllegalStateException

- added handling of 'inherit' value in the general applyCSSProperty
method
- added testcases for inherit-handling

Change-Id: Iaf5be9c6749abc979edc607c08833711d572c02f
Signed-off-by: Stefan Winkler <stefan@winklerweb.net>