Reads the user rights and put them in an array
right => level
This level is either 1 or -1  i.e. you grant the user the right  or you do not allow him to have  the right.
Overrides 
LiveUser_Perm_Common::readUserRights() (Reads all individual rights of current user into  a two-dimensional array of this format:  AreaName => RightName -> Value)