Merge pull request #254 from paczian/master

added pcoa resource
Added user login to all memcache keys so resources like "metagenome" that are dependent on which user is doing the querying, can be cached.
Merge branch 'develop' of https://github.com/MG-RAST/MG-RAST into develop
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
Merge pull request #256 from jaredbischof/develop

Fix for sequenceset resource.