Merge pull request #9 from boom1992/master

Fix getting the result
Add methods to get if a user is an administrator, if a user is superior to another, if an administrator is deletable and to change a user's role
Add spaces, delete unnecessary login state check
Prettify the code, change level to role
Move isAdmin(), isSuperior() and isDeleteable() to permissionManager.class
Add method to check admin state to userManager
Change getAllActiveUsers() to return also Deleteable
Merge pull request #13 from onurv12/master

Add methods to get if a user is an administrator, if a user is superior ...
Also include Information about deleteability in session