Merge pull request #255 from jaredbischof/develop

Added user login to memcache key
Changed the sequenceset resource call to use get_objects instead of init to avoid PPO error "ERROR: resource request failed. There must be a unique index on the combination of attributes passed. at /mcs/bio/mg-rast/api/sites/MG-RAST/site/lib/PPO/DBObject.pm line 429."
Merge branch 'develop' of https://github.com/MG-RAST/MG-RAST into develop