Cleanup

Removed no longer needed filter classes, added trait
for workers to block data manipulation
Queue fixes
worker support for delete calls
Merge branch 'cleanup_old' of github.com:dwsla/deal into cleanup_old
Merge pull request #14 from dwsla/cleanup_old

Implementation of workertrait, remove old filter classes no longer in use after schema changes, queue cleanup, implementation of check for non-puttable/deleteable endpoints