clearly distinguish a check record from it's association to an entitiy (taxonomy)

rename Redis key for check:entities to checks:entities
add API method to fetch check results by ID
delete swagger from source tree
delete swagger from source tree
add swagger as a submodule
re-define internalCheckRecord to use string instead of time.Time

redigo cannot wrapp a Sprintf-encoded time.Time (string) back into a time.Time Needs to be done 'by hand'
add publisher to details of check results; count number of check records
add new API function to return number of check records per dataset per publisher
go fmt and minor clean-up