#222: add transaction log table.
#222: add PTC storage actor.
Some unfinished stuff.
Fix logic error when pet didn't wanted to eat.
Add PTC transfer, fix compilation.
Fix errors in pet transaction handling.
Append data to the PTC transaction log.
Update comments and transaction naming.
Pet commands now know how many PTC they've taken.
Merge branch 'feature/pet-transactions' into develop. Close #222.
Fix change-nick command.
Fixed bug in pet feeding and changed silent behaviour while hungry
Fixed magical numbers
Merge pull request #224 from IngvarJackal/i_have_no_mouth_and_i_must_scream

Fixed bug in pet feeding and changed silent behaviour while hungry