Extracted the stripping of the group mail address to a function.
Renamed a parameter.
First tests for the groups/internalAPI module.
Improved stubbing of sympaStub.
Added more tests and fixed a bug.
Moved function getUsersOfList() to module groupsAndMembers (where it belongs).
Tests for the function getSympaUsersForList.
Merge remote-tracking branch 'upstream/master'
Now a better way of casting to boolean is used.
Merge pull request #49 from NicoleRauch/master

Tests für groups/internalAPI.