New Jackson mixin class to avoid sample recursion. Updated ProjectRestController.
Merge branch 'develop' of https://github.com/TGAC/miso-lims into gsuDevelop
REST service fixes

+ MISO-9: should hopefully fix all recursion scenarios for libraries in REST services
+ Javadoc for mixins
Merge branch 'develop' of https://github.com/TGAC/miso-lims into gsuDevelop
MISO-9: Fix for sample recursion in Library REST service. Missed this one.
Merge branch 'develop' of https://github.com/TGAC/miso-lims into gsuDevelop