Entity pagination hangs

[kevinpeterson]

Adding the page parameter to an non-filtered Entity search causes an error:

http://informatics.mayo.edu/cts2/rest/codesystem/SNOMEDCT/version/SNOMEDCT_2011_07_31_UMLS-RELA/entities?page=1

[kevinpeterson]

I've made some changes to the memory handling for this. It still appears to take some time coming back from Bioportal, but I don't think it should hang anymore. Please verify.