Added check to see if sub-search returns any ideas so that page stops creating sql errors.  Also, removed requirement that search results from from 'M5NR' except when searching organisms because that is the only annotation for which we calculated and recorded the M5NR abundance information.
Merge branch 'develop' of https://github.com/MG-RAST/MG-RAST into develop
Merge pull request #260 from jaredbischof/develop

Fixed a couple of MG-RAST search errors.