undo some buggy bugfixes - these need to be redone in a more working way:

undo some buggy bugfixes - these need to be redone in a more working way:
- extendmatchtime: it should check for >= 0, not > 0
- QC code should not know about these aliases, as they are just that - aliases
- instead, maybe an alias-provided way should be provided for checking if a votable alias can be executed
- also fix a newly introduced spelling error