[refactoring] reader and reader_tests use new function names
Fix IsEmpty(), and isolate comment in reader.readEmptyOrCommentLines()
[refactoring] reader fix readRepoRuleGroupUsers()
Fix Gitolite.AddUserOrGroupToRule()
Fix Gitolite.addGroup() member list for duplicate group
[refactoring] reader test rules reading
[refactoring] reader test subconf
Project test learn to pass subconfs.
Project test pass subconfs
project test user group instead of repo group