Added ability to open a quest book that son the portal

Signed-off-by: Justin Wiblin <Justin_wiblin@hotmail.co.uk>
Portal now keeps quest book in inventory between world loads, doesnt render on world load though

Signed-off-by: Justin Wiblin <Justin_wiblin@hotmail.co.uk>
Merge pull request #3 from Thelonedevil/Quests

Quests