semi-random tentative crappy code for improving quest aborting, especially when the quest owner has left the party
improve message for when quest owner has left
add text and improve existing text for cancelling/aborting quests and for reporting on various situations in which quest owner is no longer in quest or in party
Merge pull request #302 from Alys/questAbortFix

add and improve texts related to cancelling and aborting quests