Merge pull request #25 from BouwenJ/master

sql file updated
HeeftActie interface -> abstract class
Merge branch 'master' of https://github.com/TimothyXL/JavaMUD.git
commit
ActieTypes enum.
Merge pull request #26 from toyamigo/master

commit
NullType toegevoegd
Merge branch 'master' of https://github.com/TimothyXL/JavaMUD.git
Merge branch 'master' of https://github.com/TimothyXL/JavaMUD