Implement counters for up and down karma.
Sets karma counters when inconsistent with karma
Correctly set down-karma counter
Fixes syntax error, removes commented code
Minor typo.
Prevents warnings for uninitialized variables
Get karma counters when requesting current karma
Set karma counters when karma reaches 0
Fixes consistency checks on retrieving karma and setting karma
Merge pull request #2 from mrngm/patch-1

Implement counters for up and down karma.